diff --git a/Library/Homebrew/cask/artifact.rb b/Library/Homebrew/cask/artifact.rb
index eab26b9f43..02b1298b55 100644
--- a/Library/Homebrew/cask/artifact.rb
+++ b/Library/Homebrew/cask/artifact.rb
@@ -22,6 +22,9 @@ require "cask/artifact/prefpane"
 require "cask/artifact/qlplugin"
 require "cask/artifact/mdimporter"
 require "cask/artifact/screen_saver"
+require "cask/artifact/bashcompletion"
+require "cask/artifact/fishcompletion"
+require "cask/artifact/zshcompletion"
 require "cask/artifact/service"
 require "cask/artifact/stage_only"
 require "cask/artifact/suite"
diff --git a/Library/Homebrew/cask/artifact/bashcompletion.rb b/Library/Homebrew/cask/artifact/bashcompletion.rb
new file mode 100644
index 0000000000..3ffe7c6833
--- /dev/null
+++ b/Library/Homebrew/cask/artifact/bashcompletion.rb
@@ -0,0 +1,25 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "cask/artifact/shellcompletion"
+
+module Cask
+  module Artifact
+    # Artifact corresponding to the `bash_completion` stanza.
+    class BashCompletion < ShellCompletion
+      sig { params(target: T.any(String, Pathname)).returns(Pathname) }
+      def resolve_target(target)
+        name = if File.extname(target).nil?
+          target
+        else
+          new_name = File.basename(target, File.extname(target))
+          odebug "Renaming completion #{target} to #{new_name}"
+
+          new_name
+        end
+
+        config.bash_completion/name
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/cask/artifact/fishcompletion.rb b/Library/Homebrew/cask/artifact/fishcompletion.rb
new file mode 100644
index 0000000000..ef4e13c8cd
--- /dev/null
+++ b/Library/Homebrew/cask/artifact/fishcompletion.rb
@@ -0,0 +1,25 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "cask/artifact/shellcompletion"
+
+module Cask
+  module Artifact
+    # Artifact corresponding to the `fish_completion` stanza.
+    class FishCompletion < ShellCompletion
+      sig { params(target: T.any(String, Pathname)).returns(Pathname) }
+      def resolve_target(target)
+        name = if target.to_s.end_with? ".fish"
+          target
+        else
+          new_name = "#{File.basename(target, File.extname(target))}.fish"
+          odebug "Renaming completion #{target} to #{new_name}"
+
+          new_name
+        end
+
+        config.fish_completion/name
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/cask/artifact/shellcompletion.rb b/Library/Homebrew/cask/artifact/shellcompletion.rb
new file mode 100644
index 0000000000..d39d1f6913
--- /dev/null
+++ b/Library/Homebrew/cask/artifact/shellcompletion.rb
@@ -0,0 +1,20 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "cask/artifact/symlinked"
+
+module Cask
+  module Artifact
+    class ShellCompletion < Symlinked
+      sig { params(cask: Cask, source: T.any(String, Pathname)).returns(ShellCompletion) }
+      def self.from_args(cask, source)
+        new(cask, source)
+      end
+
+      sig { params(_: T.any(String, Pathname)).returns(Pathname) }
+      def resolve_target(_)
+        raise CaskInvalidError, "Shell completion without shell info"
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/cask/artifact/zshcompletion.rb b/Library/Homebrew/cask/artifact/zshcompletion.rb
new file mode 100644
index 0000000000..971de91857
--- /dev/null
+++ b/Library/Homebrew/cask/artifact/zshcompletion.rb
@@ -0,0 +1,25 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "cask/artifact/shellcompletion"
+
+module Cask
+  module Artifact
+    # Artifact corresponding to the `zsh_completion` stanza.
+    class ZshCompletion < ShellCompletion
+      sig { params(target: T.any(String, Pathname)).returns(Pathname) }
+      def resolve_target(target)
+        name = if target.to_s.start_with? "_"
+          target
+        else
+          new_name = "_#{File.basename(target, File.extname(target))}"
+          odebug "Renaming completion #{target} to #{new_name}"
+
+          new_name
+        end
+
+        config.zsh_completion/name
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/cask/config.rb b/Library/Homebrew/cask/config.rb
index aa0d76dfb3..68b0f91e95 100644
--- a/Library/Homebrew/cask/config.rb
+++ b/Library/Homebrew/cask/config.rb
@@ -176,6 +176,21 @@ module Cask
       @manpagedir ||= T.let(HOMEBREW_PREFIX/"share/man", T.nilable(Pathname))
     end
 
+    sig { returns(Pathname) }
+    def bash_completion
+      @bash_completion ||= T.let(HOMEBREW_PREFIX/"etc/bash_completion.d", T.nilable(Pathname))
+    end
+
+    sig { returns(Pathname) }
+    def zsh_completion
+      @zsh_completion ||= T.let(HOMEBREW_PREFIX/"share/zsh/site-functions", T.nilable(Pathname))
+    end
+
+    sig { returns(Pathname) }
+    def fish_completion
+      @fish_completion ||= T.let(HOMEBREW_PREFIX/"share/fish/vendor_completions.d", T.nilable(Pathname))
+    end
+
     sig { returns(T::Array[String]) }
     def languages
       [
diff --git a/Library/Homebrew/cask/dsl.rb b/Library/Homebrew/cask/dsl.rb
index 9946c199e9..6dc120b395 100644
--- a/Library/Homebrew/cask/dsl.rb
+++ b/Library/Homebrew/cask/dsl.rb
@@ -53,6 +53,9 @@ module Cask
       Artifact::Suite,
       Artifact::VstPlugin,
       Artifact::Vst3Plugin,
+      Artifact::ZshCompletion,
+      Artifact::FishCompletion,
+      Artifact::BashCompletion,
       Artifact::Uninstall,
       Artifact::Zap,
     ].freeze
@@ -449,6 +452,7 @@ module Cask
       @artifacts ||= ArtifactSet.new
     end
 
+    sig { returns(Pathname) }
     def caskroom_path
       cask.caskroom_path
     end
@@ -456,6 +460,7 @@ module Cask
     # The staged location for this cask, including version number.
     #
     # @api public
+    sig { returns(Pathname) }
     def staged_path
       return @staged_path if @staged_path
 
@@ -587,9 +592,15 @@ module Cask
       true
     end
 
+    sig { returns(T.nilable(MacOSVersion)) }
+    def os_version
+      nil
+    end
+
     # The directory `app`s are installed into.
     #
     # @api public
+    sig { returns(T.any(Pathname, String)) }
     def appdir
       return HOMEBREW_CASK_APPDIR_PLACEHOLDER if Cask.generating_hash?
 
diff --git a/Library/Homebrew/extend/os/cask/dsl.rb b/Library/Homebrew/extend/os/cask/dsl.rb
new file mode 100644
index 0000000000..1ee72f032f
--- /dev/null
+++ b/Library/Homebrew/extend/os/cask/dsl.rb
@@ -0,0 +1,4 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "extend/os/mac/cask/dsl" if OS.mac?
diff --git a/Library/Homebrew/extend/os/linux/cask/installer.rb b/Library/Homebrew/extend/os/linux/cask/installer.rb
index 5add7aae64..ab267068a8 100644
--- a/Library/Homebrew/extend/os/linux/cask/installer.rb
+++ b/Library/Homebrew/extend/os/linux/cask/installer.rb
@@ -16,7 +16,12 @@ module OS
           return if artifacts.all?(::Cask::Artifact::Font)
 
           install_artifacts = artifacts.reject { |artifact| artifact.instance_of?(::Cask::Artifact::Zap) }
-          return if install_artifacts.all?(::Cask::Artifact::Binary)
+          return if install_artifacts.all? do |artifact|
+            artifact.is_a?(::Cask::Artifact::Binary) ||
+            artifact.is_a?(::Cask::Artifact::ShellCompletion) ||
+            artifact.is_a?(::Cask::Artifact::Artifact) ||
+            artifact.is_a?(::Cask::Artifact::Manpage)
+          end
 
           raise ::Cask::CaskError, "macOS is required for this software."
         end
diff --git a/Library/Homebrew/extend/os/mac/cask/dsl.rb b/Library/Homebrew/extend/os/mac/cask/dsl.rb
new file mode 100644
index 0000000000..252c6a16f5
--- /dev/null
+++ b/Library/Homebrew/extend/os/mac/cask/dsl.rb
@@ -0,0 +1,23 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "cask/macos"
+
+module OS
+  module Mac
+    module Cask
+      module DSL
+        extend T::Helpers
+
+        requires_ancestor { ::Cask::DSL }
+
+        sig { returns(T.nilable(MacOSVersion)) }
+        def os_version
+          MacOS.full_version
+        end
+      end
+    end
+  end
+end
+
+Cask::DSL.prepend(OS::Mac::Cask::DSL)
diff --git a/Library/Homebrew/test/cask/artifact/bashcompletion_spec.rb b/Library/Homebrew/test/cask/artifact/bashcompletion_spec.rb
new file mode 100644
index 0000000000..3bdfec62f4
--- /dev/null
+++ b/Library/Homebrew/test/cask/artifact/bashcompletion_spec.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+RSpec.describe Cask::Artifact::BashCompletion, :cask do
+  let(:cask) { Cask::CaskLoader.load(cask_token) }
+
+  context "with install" do
+    let(:install_phase) do
+      lambda do
+        cask.artifacts.select { |a| a.is_a?(described_class) }.each do |artifact|
+          artifact.install_phase(command: NeverSudoSystemCommand, force: false)
+        end
+      end
+    end
+
+    let(:source_path) { cask.staged_path.join("test.bash") }
+    let(:target_path) { cask.config.bash_completion.join("test") }
+    let(:full_source_path) { cask.staged_path.join("test.bash-completion") }
+    let(:full_target_path) { cask.config.bash_completion.join("test") }
+
+    before do
+      InstallHelper.install_without_artifacts(cask)
+    end
+
+    context "with completion" do
+      let(:cask_token) { "with-shellcompletion" }
+
+      it "links the completion to the proper directory" do
+        install_phase.call
+
+        expect(File).to be_identical target_path, source_path
+      end
+    end
+
+    context "with long completion" do
+      let(:cask_token) { "with-shellcompletion-long" }
+
+      it "links the completion to the proper directory" do
+        install_phase.call
+
+        expect(File).to be_identical full_target_path, full_source_path
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/test/cask/artifact/fishlcompletion_spec.rb b/Library/Homebrew/test/cask/artifact/fishlcompletion_spec.rb
new file mode 100644
index 0000000000..f5e166ff45
--- /dev/null
+++ b/Library/Homebrew/test/cask/artifact/fishlcompletion_spec.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+RSpec.describe Cask::Artifact::FishCompletion, :cask do
+  let(:cask) { Cask::CaskLoader.load(cask_token) }
+
+  context "with install" do
+    let(:install_phase) do
+      lambda do
+        cask.artifacts.select { |a| a.is_a?(described_class) }.each do |artifact|
+          artifact.install_phase(command: NeverSudoSystemCommand, force: false)
+        end
+      end
+    end
+
+    let(:source_path) { cask.staged_path.join("test.fish") }
+    let(:target_path) { cask.config.fish_completion.join("test.fish") }
+    let(:full_source_path) { cask.staged_path.join("test.fish-completion") }
+    let(:full_target_path) { cask.config.fish_completion.join("test.fish") }
+
+    before do
+      InstallHelper.install_without_artifacts(cask)
+    end
+
+    context "with completion" do
+      let(:cask_token) { "with-shellcompletion" }
+
+      it "links the completion to the proper directory" do
+        install_phase.call
+
+        expect(File).to be_identical target_path, source_path
+      end
+    end
+
+    context "with long completion" do
+      let(:cask_token) { "with-shellcompletion-long" }
+
+      it "links the completion to the proper directory" do
+        install_phase.call
+
+        expect(File).to be_identical full_target_path, full_source_path
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/test/cask/artifact/zshcompletion_spec.rb b/Library/Homebrew/test/cask/artifact/zshcompletion_spec.rb
new file mode 100644
index 0000000000..8a46f84f5e
--- /dev/null
+++ b/Library/Homebrew/test/cask/artifact/zshcompletion_spec.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+RSpec.describe Cask::Artifact::ZshCompletion, :cask do
+  let(:cask) { Cask::CaskLoader.load(cask_token) }
+
+  context "with install" do
+    let(:install_phase) do
+      lambda do
+        cask.artifacts.select { |a| a.is_a?(described_class) }.each do |artifact|
+          artifact.install_phase(command: NeverSudoSystemCommand, force: false)
+        end
+      end
+    end
+
+    let(:source_path) { cask.staged_path.join("_test") }
+    let(:target_path) { cask.config.zsh_completion.join("_test") }
+    let(:full_source_path) { cask.staged_path.join("test.zsh-completion") }
+    let(:full_target_path) { cask.config.zsh_completion.join("_test") }
+
+    before do
+      InstallHelper.install_without_artifacts(cask)
+    end
+
+    context "with completion" do
+      let(:cask_token) { "with-shellcompletion" }
+
+      it "links the completion to the proper directory" do
+        install_phase.call
+
+        expect(File).to be_identical target_path, source_path
+      end
+    end
+
+    context "with long completion" do
+      let(:cask_token) { "with-shellcompletion-long" }
+
+      it "links the completion to the proper directory" do
+        install_phase.call
+
+        expect(File).to be_identical full_target_path, full_source_path
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/test/support/fixtures/cask/AppWithShellCompletion.zip b/Library/Homebrew/test/support/fixtures/cask/AppWithShellCompletion.zip
new file mode 100644
index 0000000000..bd3496ae41
Binary files /dev/null and b/Library/Homebrew/test/support/fixtures/cask/AppWithShellCompletion.zip differ
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/with-shellcompletion-long.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/with-shellcompletion-long.rb
new file mode 100644
index 0000000000..8a0e80ad30
--- /dev/null
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/with-shellcompletion-long.rb
@@ -0,0 +1,11 @@
+cask "with-shellcompletion-long" do
+  version "1.2.3"
+  sha256 "957978d9b30adfda8e1f914ba8c8019e016545c8f7e16c6ab0234d189fac8146"
+
+  url "file://#{TEST_FIXTURE_DIR}/cask/AppWithShellCompletion.zip"
+  homepage "https://brew.sh/with-autodetected-manpage-section"
+
+  bash_completion "test.bash-completion"
+  fish_completion "test.fish-completion"
+  zsh_completion "test.zsh-completion"
+end
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/with-shellcompletion.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/with-shellcompletion.rb
new file mode 100644
index 0000000000..54f518dd4c
--- /dev/null
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/with-shellcompletion.rb
@@ -0,0 +1,11 @@
+cask "with-shellcompletion" do
+  version "1.2.3"
+  sha256 "957978d9b30adfda8e1f914ba8c8019e016545c8f7e16c6ab0234d189fac8146"
+
+  url "file://#{TEST_FIXTURE_DIR}/cask/AppWithShellCompletion.zip"
+  homepage "https://brew.sh/with-autodetected-manpage-section"
+
+  bash_completion "test.bash"
+  fish_completion "test.fish"
+  zsh_completion "_test"
+end