Koeppel is a surname. Notable people with the surname include:

Alfred J. Koeppel (1932–2001), American real estate developer
Gerard Koeppel (born 1975), American author and historian
Gerhard Koeppel (1936–2012), German historian of Roman art
Horst Köppel (born 1948), German football manager and former player
Dan Koeppel (born 1962), American author
Roger Köppel (born 1965), Swiss politician, journalist, entrepreneur and publicist

See also
Koppel (disambiguation)