Buddy Greco (born Armando Greco, August 14, 1926, Philadelphia, Pennsylvania) is an American singer and pianist.

Greco began playing piano at the age of four. His first professional work was playing with Benny Goodman's band. Most of Greco's work has been in the jazz and pop genres. He has recorded songs such as "Oh Look A-There, Ain't She Pretty", "The Lady is a Tramp", and "Around the World", and has released about 65 albums and 100 singles. He has had an active concert career playing in symphony halls, theatres, nightclubs, and Las Vegas showrooms. In the 1960s he made appearances with the Rat Pack. Greco played the nightclub singer Lucky in the 1969 film The Girl Who Knew Too Much. Greco has recorded albums for the Columbia/Epic and Reprise record labels, and other minor labels. His most popular albums were On Stage and Buddy's Back in Town, both with Columbia. His most successful single was "The Lady is a Tramp", which sold over one million copies and was awarded a gold disc.