Peter Brown (born October 5, 1935) is an American television actor known for his role as Deputy Johnny McKay opposite John Russell (who played Marshal Dan Troop) in the 1958 Warner Bros. western series Lawman.

Brown was born in New York City as Pierre Lind de Lappe. His mother, Mina Reaume, was a stage and radio actress, playing the "Dragon Lady" on the Terry and the Pirates radio serial. He has an older brother, Phillip, and two younger half brothers, Paul and Michael. Peter took the name Brown from his stepfather, Albert Brown.

During his US Army service in Alaska with the 2nd Infantry Division (United States), Brown became involved in writing, directing and acting in plays to entertain the other troops. Upon his discharge, Brown studied Drama at UCLA and soon was appearing in plays and on NBC Matinee Theatre. Brown also supported himself by working in a gas station on the Sunset Strip. One night a man paid for his purchase with a credit card reading "Jack L. Warner". Brown asked the customer whether he was one of the Warner Brothers, the man replied "I'm the last one left". The next day Brown was offered a screen test at the studio. In 1958, he married actress Diane Jergens. They were divorced in 1959.