Jan Němec (12 July 1936 – 18 March 2016) was a Czech filmmaker whose most important work dates from the 1960s. Film historian Peter Hames has described him as the "enfant terrible of the Czech New Wave."

Jan Němeček (born February 14, 1976) is a Czech former professional ice hockey defenceman. He was drafted 215th overall in the 1994 NHL Entry Draft by the Los Angeles Kings and played seven games in the National Hockey League for the Kings, scoring one goal.

Janki may refer to the following places: