Lloyd George Sealy (January 4, 1917 – January 4, 1985) was the NYPD's first African American officer to graduate from the FBI National Academy and the first African American officer in the NYPD to make rank as the commander of a police station in 1963 serving the 28th precinct in Harlem. He was also the first African American officer to serve as Assistant Chief Inspector and Borough Commander serving the Patrol Borough of Brooklyn North (which included historical African American communities such as Bedford-Stuyvesant, Brownsville, Weeksville, Clinton Hill, Fort Greene, and East New York, among others) in 1966.
After Sealy's retirement from the NYPD in 1969, he became the first African American Associate Professor of Law and Police Science at John Jay College of Criminal Justice. Sealy is also a founding member of NOBLE, a national organization of African American police officers from various American cities.
Sealy died in 1985 on his 68th birthday. He had been preparing for his classes in the John Jay College Library when he suffered a heart attack.
On December 4, 1991, the library at John Jay was renamed the Lloyd Sealy Library in his honor. The Special Collections there house his personal papers, which document his career as a police officer and a scholar.