Klemenčič is a Slovene surname. Notable people with the surname include:
*
Andrew Klemencic (1860–1906), Slovene anarchist and union organizer
*
Blaža Klemenčič (born 1980), Slovenian cyclist
*
Ignacij Klemenčič (1853–1901), Slovenian physicist
*
Janez Klemenčič (born 1971), Slovenian rower
See also
*
Klemencice, a village in south-central Poland
*
Klemen
Klemen is a Slovene masculine name derived from the Latin Clemens, meaning 'merciful'. Klemen is the 42nd most common men's name in Slovenia (as of 2016). It may refer to:
* Klemen Ferjan (born 1979), Slovenian judoka
* Klemen Klemen, Slovenian ...
{{DEFAULTSORT:Klemencic
Slovene-language surnames
Patronymic surnames