Keechant L. Sewell is an American former police officer and administrator who served as the 45th New York City Police Commissioner, the first woman and third black person to serve in the position. On June 12, 2023, Sewell announced that she was stepping down as commissioner. No reason was given for her departure. On November 2, 2023, the New York Mets announced that Sewell would become their senior Vice President of security and guest experience.

The New York City Police Commissioner is the head of the New York City Police Department and presiding member of the Board of Commissioners. The commissioner is appointed by and serves at the pleasure of the mayor. The commissioner is responsible for the day-to-day operations of the department as well as the appointment of deputies including the Chief of Department and subordinate officers. Commissioners are civilian administrators, and they and their subordinate deputies are civilians under an oath of office, not sworn members of the force. This is a separate position from the Chief of Department, who is the senior sworn uniformed member of the force. The First Deputy Commissioner is the Commissioner and department's second-in-command. The office of the Police Commissioner is located at the NYPD Headquarters, One Police Plaza. Both the commissioner and first deputy commissioner outrank all uniformed officers, including the chief of department.