Laar is a surname. Notable people with the surname include:
- Conrad Laar (1853–1929), German chemist
- Getter Laar (born 1989), Estonian football player
- Johannes van Laar (1860–1938), Dutch chemist
- Mart Laar (born 1960), Estonian politician and historian
- Roelof van Laar (born 1981), Dutch politician
- Timothy Van Laar (born 1951), American artist and writer