diff --git a/lib/fastlane/plugin/wpmreleasetoolkit/actions/common/buildkite_upload_pipeline_action.rb b/lib/fastlane/plugin/wpmreleasetoolkit/actions/common/buildkite_upload_pipeline_action.rb
new file mode 100644
index 000000000..474c87805
--- /dev/null
+++ b/lib/fastlane/plugin/wpmreleasetoolkit/actions/common/buildkite_upload_pipeline_action.rb
@@ -0,0 +1,70 @@
+module Fastlane
+  module Actions
+    class BuildkiteUploadPipelineAction < Action
+      def self.run(params)
+        branch = params[:branch]
+        pipeline_file = params[:pipeline_file]
+        commit = params[:commit]
+        env_file = params[:env_file]
+
+        UI.user_error!("Pipeline file not found: #{pipeline_file}") unless File.exist?(pipeline_file)
+
+        UI.message "Uploading pipeline #{pipeline_file} on branch #{branch}, commit #{commit}"
+
+        ENV['BUILDKITE_BRANCH'] = branch
+        ENV['BUILDKITE_COMMIT'] = commit
+
+        if env_file && File.exist?(env_file)
+          UI.message("Sourcing environment file: #{env_file}")
+
+          sh(". #{env_file} && buildkite-agent pipeline upload #{pipeline_file}")
+        else
+          sh('buildkite-agent', 'pipeline', 'upload', pipeline_file)
+        end
+      end
+
+      def self.description
+        # https://buildkite.com/docs/agent/v3/cli-pipeline#uploading-pipelines
+        'Uploads a pipeline to Buildkite, adding all its steps to the current build'
+      end
+
+      def self.available_options
+        [
+          FastlaneCore::ConfigItem.new(
+            key: :env_file,
+            description: 'The path to the environment variables file to be sourced before uploading the pipeline',
+            optional: true,
+            type: String
+          ),
+          FastlaneCore::ConfigItem.new(
+            key: :pipeline_file,
+            description: 'The path to the Buildkite pipeline file',
+            optional: false,
+            type: String
+          ),
+          FastlaneCore::ConfigItem.new(
+            key: :branch,
+            description: 'The branch you want to run the pipeline on',
+            optional: false,
+            type: String
+          ),
+          FastlaneCore::ConfigItem.new(
+            key: :commit,
+            description: 'The commit hash you want to run the pipeline on',
+            optional: true,
+            default_value: 'HEAD',
+            type: String
+          ),
+        ]
+      end
+
+      def self.authors
+        ['Automattic']
+      end
+
+      def self.is_supported?(platform)
+        true
+      end
+    end
+  end
+end
diff --git a/spec/buildkite_upload_pipeline_action_spec.rb b/spec/buildkite_upload_pipeline_action_spec.rb
new file mode 100644
index 000000000..1449e6272
--- /dev/null
+++ b/spec/buildkite_upload_pipeline_action_spec.rb
@@ -0,0 +1,113 @@
+require 'spec_helper'
+
+describe Fastlane::Actions::BuildkiteUploadPipelineAction do
+  let(:pipeline_file) { 'path/to/pipeline.yml' }
+  let(:branch) { 'feature-branch' }
+  let(:commit) { 'abc123' }
+
+  describe 'parameter validation' do
+    it 'raises an error when pipeline_file is not provided' do
+      expect do
+        run_described_fastlane_action(branch: branch)
+      end.to raise_error(FastlaneCore::Interface::FastlaneError, /pipeline_file/)
+    end
+
+    it 'raises an error when branch is not provided' do
+      expect do
+        run_described_fastlane_action(pipeline_file: pipeline_file)
+      end.to raise_error(FastlaneCore::Interface::FastlaneError, /branch/)
+    end
+
+    it 'raises an error when pipeline_file does not exist' do
+      allow(File).to receive(:exist?).with(pipeline_file).and_return(false)
+      expect do
+        run_described_fastlane_action(
+          pipeline_file: pipeline_file,
+          branch: branch
+        )
+      end.to raise_error(FastlaneCore::Interface::FastlaneError, /Pipeline file not found/)
+    end
+  end
+
+  describe 'pipeline upload' do
+    before do
+      allow(File).to receive(:exist?).with(pipeline_file).and_return(true)
+    end
+
+    it 'calls the right command to upload the pipeline without env_file' do
+      expect(Fastlane::Action).to receive(:sh).with('buildkite-agent', 'pipeline', 'upload', pipeline_file)
+      expect(Fastlane::UI).to receive(:message).with("Uploading pipeline #{pipeline_file} on branch #{branch}, commit #{commit}")
+
+      run_described_fastlane_action(
+        pipeline_file: pipeline_file,
+        branch: branch,
+        commit: commit
+      )
+
+      expect(ENV['BUILDKITE_BRANCH']).to eq(branch)
+      expect(ENV['BUILDKITE_COMMIT']).to eq(commit)
+    end
+
+    it 'calls the right command to upload the pipeline with env_file' do
+      env_file = 'path/to/env_file'
+      allow(File).to receive(:exist?).with(env_file).and_return(true)
+      expect(Fastlane::Action).to receive(:sh).with(". #{env_file} && buildkite-agent pipeline upload #{pipeline_file}")
+      expect(Fastlane::UI).to receive(:message).with("Uploading pipeline #{pipeline_file} on branch #{branch}, commit #{commit}")
+      expect(Fastlane::UI).to receive(:message).with("Sourcing environment file: #{env_file}")
+
+      run_described_fastlane_action(
+        pipeline_file: pipeline_file,
+        branch: branch,
+        commit: commit,
+        env_file: env_file
+      )
+
+      expect(ENV['BUILDKITE_BRANCH']).to eq(branch)
+      expect(ENV['BUILDKITE_COMMIT']).to eq(commit)
+    end
+
+    it 'skips sourcing env_file when it does not exist' do
+      env_file = 'path/to/non_existent_env_file'
+      allow(File).to receive(:exist?).with(env_file).and_return(false)
+      expect(Fastlane::Action).to receive(:sh).with('buildkite-agent', 'pipeline', 'upload', pipeline_file)
+      expect(Fastlane::UI).not_to receive(:message).with(/Sourcing environment file/)
+
+      run_described_fastlane_action(
+        pipeline_file: pipeline_file,
+        branch: branch,
+        commit: commit,
+        env_file: env_file
+      )
+    end
+  end
+
+  describe 'default values' do
+    it 'uses default value for commit when not provided' do
+      allow(File).to receive(:exist?).with(pipeline_file).and_return(true)
+      expect(Fastlane::Action).to receive(:sh).with('buildkite-agent', 'pipeline', 'upload', pipeline_file)
+      expect(Fastlane::UI).to receive(:message).with("Uploading pipeline #{pipeline_file} on branch #{branch}, commit HEAD")
+
+      run_described_fastlane_action(
+        pipeline_file: pipeline_file,
+        branch: branch
+      )
+
+      expect(ENV['BUILDKITE_BRANCH']).to eq(branch)
+      expect(ENV['BUILDKITE_COMMIT']).to eq('HEAD')
+    end
+  end
+
+  describe 'error handling' do
+    it 'raises an error when the pipeline upload fails' do
+      allow(File).to receive(:exist?).with(pipeline_file).and_return(true)
+      allow(Fastlane::Action).to receive(:sh).and_raise(StandardError.new('Upload failed'))
+
+      expect do
+        run_described_fastlane_action(
+          pipeline_file: pipeline_file,
+          branch: branch
+        )
+      end.to raise_error(StandardError, 'Upload failed')
+    end
+  end
+end