The surname Okamoto (岡本), meaning "hill base," is the 48th most common in Japan, belonging to a vast number of notable individuals across various fields. Among them are the celebrated abstract and avant-garde artist Tarō Okamoto (1911–1996) and renowned film director Kihachi Okamoto (1924–2005). The name is also prominent in sports, represented by professional golfer Ayako Okamoto and Yoriko Okamoto (born 1971), Japan's first Olympic taekwondo medalist.
Beyond Japanese celebrities, the surname is held by figures such as American architect Rai Okamoto and judge Vincent Okamoto, as well as Brazilian swimmer Tetsuo Okamoto. From authors like Okamoto Kanoko and manga artists like Lynn Okamoto, to musicians, politicians, and mathematicians, the name is associated with diverse accomplishments. Its broader impact is even recognized by the naming of an asteroid, 6244 Okamoto, and a railway station in Kobe.