The Coruscant Security Force (CSF) Senate Guards were police officers during the Cold War era assigned the duty of protecting both the Galactic Republic Senate Building on the capital planet Coruscant. They shared jurisdiction of protecting the Senate Building with members of the Republic Military called Senate Security Officers (SSO).
Several officers were present at a inquiry by the on the events surrounding the defection of Havoc Squad.
They were also present at a formal ceremony congratulating the Jedi Consular known as Barsen'thor.
Both the CSF senate guards and the Senate Security Officers were eventually replaced by the more formalized, and separate, Senate Guard organization.
The CSF Senate Guards first appeared in Star Wars: The Old Republic.