Kollar is a surname of German origin, and Kollár is the Slavic variant. The name may refer to:
Adam František Kollár (1718–1783), Slovak historian
Andrej Kollár (born 1977), Slovak ice hockey manager
Bill Kollar (born 1952), American football coach
Colleen Kollar-Kotelly (born 1943), American judge
David Kollar (born 1983), Slovak musician
Helmut Kollars (born 1968), Austrian illustrator
Igor Kollár (born 1965), Slovak athlete
Ján Kollár (1793–1852), Slovak writer
János Kollár (born 1956), Hungarian mathematician
Laszlo Peter Kollar (1926–2000), Australian architect
Martin Kollar (born 1971), Slovak photographer
Péter Kollár (1855–1908), Slovene writer
Pina Kollars (born 1970), Austrian singer
Sebastian Kollar (born 1987), Swiss football player
Tomas Kollar (born 1982), Swedish ice hockey player
Vincenz Kollar (1797–1860), Austrian entomologist
