Aho is a Finnish Laine type surname meaning "glade". Notable people with the surname include:
Aimo Aho (1951–2014), Finnish javelin thrower Alfred Aho (born 1941), Canadian computer scientist Bill Aho (born 1957), American businessman Claire Aho (1925–2015), Finnish photographer Eero Aho (born 1968), Finnish actor Eric Aho (born 1966), American painter Esko Aho (born 1954), former prime minister of Finland Heikki Aho (filmmaker) (1895–1961), Finnish film director, of Aho & Soldan film production company Heikki Aho (footballer) (born 1983), Finnish footballer Joni Aho (born 1986), Finnish footballer Juhana Aho (born 1993), Finnish ice hockey player Juhani Aho (1861–1921), Finnish writer Junior Aho (born 1999), French American football player Jussi Halla-aho (born 1983), Finnish politician Jussi Hauta-aho, Finnish rapper known as Kube Jyrki Aho (born 1974), former Finnish ice hockey player Kaarina Aho (1925–1990), Finnish ceramist and designer Kalevi Aho (born 1949), Finnish composer Matti Aho (1934–1984), Finnish boxer Matti Luoma-aho (1885–1943), Finnish politician Martti Johannes Aho (1896–1986), Finnish colonel Martti Korkia-Aho (1930–2012), Finnish politician Ninos Aho (1945–2013), Assyrian poet and activist Paavo Aho (1891–1918), Finnish athlete Pascal Aho, Beninese sprinter Peter Aho, (born 2003), Nigerian cricketer Petri Aho, Finnish guitarist Raila Aho (born 1937), Finnish politician Sebastian Aho, Finnish ice hockey player Sebastian Aho (ice hockey, born 1996), Swedish ice hockey player Seppo Aho, (born 1944), Finnish pentathlete Susan Aho (born 1974), Finnish singer-songwriter and member of Värttinä Teppo Hauta-aho (1941–2021), Finnish musician Tommy Mansikka-Aho, Finnish musician Tuomas Aho (born 1981), Finnish footballer Viljo Aho, (1932–2013), Finnish boxer Wayne Sulo Aho (1916–2006), American contactee