diff --git a/spanner/spanner_create_instance_partition.rb b/spanner/spanner_create_instance_partition.rb
new file mode 100644
index 000000000..3f1742e7a
--- /dev/null
+++ b/spanner/spanner_create_instance_partition.rb
@@ -0,0 +1,57 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# [START spanner_create_instance_partition]
+require "google/cloud/spanner"
+require "google/cloud/spanner/admin/instance"
+
+def spanner_create_instance_partition project_id:, instance_id:, instance_partition_id:
+  # project_id  = "The Google Cloud project ID"
+  # instance_id = "The Spanner instance ID"
+  # instance_partition_id = "The instance partition ID"
+
+  instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin
+  instance_path = instance_admin_client.instance_path project: project_id, instance: instance_id
+  instance_config_path = instance_admin_client.instance_config_path \
+    project: project_id, instance_config: "nam3"
+  instance_partition_path = instance_admin_client.instance_partition_path \
+    project: project_id, instance: instance_id, instance_partition: instance_partition_id
+
+  instance_partition = {
+    config: instance_config_path,
+    display_name: "test_create_instance_partition",
+    node_count: 1
+  }
+  request = {
+    parent: instance_path,
+    instance_partition_id: instance_partition_id,
+    instance_partition: instance_partition
+  }
+  job = instance_admin_client.create_instance_partition request
+
+  puts "Waiting for create instance partition to complete"
+
+  job.wait_until_done!
+
+  if job.error?
+    puts job.error
+  else
+    puts "Created instance partition #{instance_partition_id}"
+  end
+end
+# [END spanner_create_instance_partition]
+
+if $PROGRAM_NAME == __FILE__
+  spanner_create_instance_partition project_id: ARGV.shift, instance_id: ARGV.shift, instance_partition_id: ARGV.shift
+end
diff --git a/spanner/spanner_delete_instance_partition.rb b/spanner/spanner_delete_instance_partition.rb
new file mode 100644
index 000000000..7e7597972
--- /dev/null
+++ b/spanner/spanner_delete_instance_partition.rb
@@ -0,0 +1,30 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# [START spanner_delete_instance_partition]
+require "google/cloud/spanner"
+require "google/cloud/spanner/admin/instance"
+
+def spanner_delete_instance_partition instance_partition_id:
+  # instance_partition_id = "The instance partition's full name, e.g projects/{project}/instances/{instance}/instancePartitions/custom_nam11"
+
+  instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin
+  instance_admin_client.delete_instance_partition name: instance_partition_id
+  puts "Deleted instance partition #{instance_partition_id}"
+end
+# [END spanner_delete_instance_partition]
+
+if $PROGRAM_NAME == __FILE__
+  spanner_delete_instance_partition instance_partition_id: ARGV.shift
+end
diff --git a/spanner/spec/spanner_create_instance_partition_spec.rb b/spanner/spec/spanner_create_instance_partition_spec.rb
new file mode 100644
index 000000000..0ff511e32
--- /dev/null
+++ b/spanner/spec/spanner_create_instance_partition_spec.rb
@@ -0,0 +1,42 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require_relative "../spanner_create_instance_partition"
+require_relative "../spanner_delete_instance_partition"
+require_relative "./spec_helper"
+
+describe "Spanner custom instance partition" do
+  after :each do
+    @created_instance_partitions_ids.each do |instance_partition_id|
+      name = instance_partition_path @instance_id, instance_partition_id
+      spanner_delete_instance_partition instance_partition_id: name
+    end
+    @created_instance_partitions_ids.clear
+  end
+
+  example "Create" do
+
+    instance_partition_id = "custom-ruby-samples-instance-partition-#{SecureRandom.hex(8)}"
+    @created_instance_partitions_ids << instance_partition_id
+
+    capture do
+      spanner_create_instance_partition project_id: @project_id,
+                             instance_id: @instance_id,
+                             instance_partition_id: instance_partition_id
+    end
+    expect(captured_output).to include(
+                                 "Created instance partition #{instance_partition_id}"
+                               )
+  end
+end
diff --git a/spanner/spec/spanner_delete_instance_partition_spec.rb b/spanner/spec/spanner_delete_instance_partition_spec.rb
new file mode 100644
index 000000000..fbd01a255
--- /dev/null
+++ b/spanner/spec/spanner_delete_instance_partition_spec.rb
@@ -0,0 +1,35 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require_relative "../spanner_create_instance_partition"
+require_relative "../spanner_delete_instance_partition"
+require_relative "./spec_helper"
+
+describe "Spanner custom instance partition" do
+  example "Delete" do
+    instance_partition_id = "custom-ruby-samples-instance-partition-#{SecureRandom.hex(8)}"
+    spanner_create_instance_partition project_id: @project_id,
+                                      instance_id: @instance_id,
+                                      instance_partition_id: instance_partition_id
+
+    name = instance_partition_path @instance_id, instance_partition_id
+
+    capture do
+      spanner_delete_instance_partition instance_partition_id: name
+    end
+    expect(captured_output).to include(
+                                 "Deleted instance partition #{name}"
+                               )
+  end
+end
diff --git a/spanner/spec/spec_helper.rb b/spanner/spec/spec_helper.rb
index ea5290ad7..6aca94f30 100644
--- a/spanner/spec/spec_helper.rb
+++ b/spanner/spec/spec_helper.rb
@@ -37,6 +37,7 @@
     @mr_instance          = @spanner.instance @mr_instance_id
     @created_instance_ids = []
     @created_instance_config_ids = []
+    @created_instance_partitions_ids = []
     # A list of KMS key names to be used with CMEK
     @kms_key_names = [
       "projects/#{@project_id}/locations/us-central1/keyRings/spanner-test-keyring/cryptoKeys/spanner-test-cmek",
@@ -114,6 +115,13 @@ def instance_config_path instance_config_id
       project: @project_id, instance_config: instance_config_id
   end
 
+  def instance_partition_path instance_id, instance_partition_id
+    instance_admin_client.instance_partition_path \
+      project: @project_id,
+      instance: instance_id,
+      instance_partition: instance_partition_id
+  end
+
   def instance_path instance_id
     instance_admin_client.instance_path \
       project: @project_id, instance: instance_id