LAPD Command Staff

John McMahon


Deputy Chief John McMahon graduated from the Los Angeles Police Academy in 1989. Deputy Chief McMahon is an accomplished law enforcement executive. With expertise in counterterrorism, uses of force and law enforcement technology. He has proven his leadership skills by implementing significant organizational changes that have contributed in the reduction of police officer involved shootings and is now leading the Department to many technological enhancements. Deputy Chief McMahon holds a B.A. in Business Administration from the University of La Verne and a graduate of the West Point Leadership Academy.

In 2001, Deputy Chief McMahon was promoted to lieutenant assigned to the Operations-Valley Bureau, Violent Crime Task Force (VCTF). Under his leadership, VCTF received great accolades and positive publicity for their exceptional productivity, as evidenced by a noteworthy number of high-profile arrests and significant number of firearms and narcotic seizures.

In 2013, Deputy Chief McMahon promoted to captain managing patrol and traffic commands, followed by being named the commanding officer at Use of Force Review Division, where he guided and oversaw the internal review of thousands of uses of force investigations. Deputy Chief McMahon contributed his subject-matter expertise to the dialogue that led to the  Department-wide implementation of tactical de-escalation concepts, implementation of the use of body-worn video evidence during uses of force investigations, and the publication of what became the premier annual report on law enforcement use of force statistics in the nation.

In 2018, Deputy Chief McMahon was promoted to commander assigned as the assistant commanding officer of Operations-Central Bureau, followed by being named the commanding officer of Information Technology Group (ITG). As a direct report to the Chief of Police at ITG, Deputy Chief McMahon began a long term, multi-year, project to overhaul, update and modernize the Department and its IT organization. This ongoing program features an extensive Strategic Technology Plan that is funded via a public/private partnership.

In 2020, John McMahon was promoted to Deputy Chief, serving as the Department’s Chief Information Officer, elevating his leadership role, and re-establishing the Information  Technology Bureau for the Department. His promotion marked a commitment by the City and Department to create continuity in services and consistency in the command which will bolster the long-term success of the Strategic Technology Plan. Deputy Chief McMahon oversees a staff of 150 civilian and sworn personnel and manages the Department’s seventy-million-dollar annual technology budget.