Jeník (feminine: Jeníková) is a Czech surname, which originated a diminutive form of the given name Jan. Notable people with the surname include:
Jan Jeník (born 2000), Czech ice hockey player John Joseph Jenik (born 1944), American Catholic bishop Štěpán Jeník (born 1993), Czech ice hockey player
See also
Jeník, a fictional character in The Bartered Bride