Frank Marchlewski (October 14, 1943 – October 27, 2016) was a professional American football player who played offensive lineman for six seasons for the Los Angeles Rams, Atlanta Falcons, and Buffalo Bills.

[1] As a member of the Bills in his final year (1970), he became their starting center,[2] replacing Al Bemiller.

However, the Bills fielded a poor team that year, with a record of 3–10–1, scoring 204 points (14.6 points/game), 23rd of 26 teams in the NFL, despite the presence of second year pro O. J. Simpson in the backfield, who rushed for 488 yards.

The following year, Marchlewski was replaced by rookie Bruce Jarvis.

This biographical article relating to an American football offensive lineman born in the 1940s is a stub.