Horák (feminine Horáková) is a Czech and Slovak family name. Notable people with the surname include:
- Hana Horáková (born 1979), Czech basketball player
- Jiří Horák (1924–2003), Czech democrat
- Josef Horák (1931–2005), Czech bass clarinetist
- Martin Horák (born 1980), Czech footballer
- Milada Horáková (1901–1950), Czech politician executed by communists
- Oldřich Horák (born 1991), Czech ice hockey player
- Peter Horák (born 1983), Slovakian higher jumper
- Petr Horák (born 1991), Czech snowboarder
- Robert Horák (born 1982), Czech ice hockey player
- Roman Horák (ice hockey, born 1969), Czech ice hockey player
- Roman Horák (ice hockey, born 1991), Czech ice hockey player
- Václav Horák (1912–2000), Czech footballer
- Václav Emanuel Horák (1800–1871), Czech composer
Horak
- Bruce Horak (born 1974), Canadian artist and television and stage actor
- Marianne Horak (born 1944), Swiss-Austrian entomologist
- Michael Horak (born 1977), South African rugby player
- Olga Horak (1926–2024) Slovak-born Australian author and Holocaust survivor
- Yaroslav Horak (1927–2020), Australian comics artist for the Daily Express
- Walter Horak (1931–2019), Austrian footballer