Yokoyama (横山) is a Japanese surname. Notable people with the surname include:
Akihito Yokoyama (b. 1961), Japanese golferChisa Yokoyama (b. 1969), Japanese voice actress and singerGo Yokoyama in fact Tsuyoshi Yokoyama (b. 1983), Japanese kickboxerHideo Yokoyama (b. 1957), Japanese novelistHirotoshi Yokoyama (b. 1975), Japanese football playerHokuto Yokoyama (b. 1963), Japanese politician (Democratic Party of Japan)Isamu Yokoyama (1889-1952), general in the Imperial Japanese ArmyJuri Yokoyama (b. 1955), Japanese volleyball playerKatsuya Yokoyama (1934–2010), renowned player and teacher of the shakuhachi, a traditional Japanese vertical bamboo fluteKen Yokoyama (横山健) is the founder of the punk record label, Pizza of Death Records.Ken Yokoyama (横山剣) is a member of Crazy Ken Band.Kenzo Yokoyama (b. 1943), Japanese football player and coachKnock Yokoyama (1932–2007), Japanese comedian and politicianKumi Yokoyama (b. 1993), Japanese football strikerMarumitsu Yokoyama in fact Okitaka Yokoyama (1780–1854), Japanese late Edo period samurai and founder of the TōkyūjutsuMasafumi Yokoyama (b. 1956), Japanese football playerMasami Yokoyama (b. 1981), Japanese volleyball playerMatsuo Yokoyama (b. 1927), president of Walt Disney Enterprises of JapanMatsusaburō Yokoyama (1838–1884), pioneering Japanese photographer, artist, lithographer and teacherMinehiro Yokoyama (b. 1971), Japanese ski mountaineerMitsuteru Yokoyama (1934–2004), Japanese manga artistNaoki Yokoyama (b. 1949), Japanese electrical engineerSakujirō Yokoyama (1864–1912), early disciple of Kanō JigorōSatoshi Yokoyama (b. 1980), Japanese football playerSeiji Yokoyama (b. 1935), Japanese incidental music composerShizuo Yokoyama (1890–1961), Japanese general in the Imperial Japanese ArmyShōmatsu Yokoyama (1913–1992), Japanese physicianSumiko Yokoyama (b. 1974), Japanese cross-country skierTaikan Yokoyama, pseudonym of Sakai Hidemaro (1868–1958), major figure in pre-WW2 Japanese paintingTakayuki Yokoyama (b. 1972), Japanese football playerTakashi Yokoyama (1913–194?), Japanese swimmerTakuya Yokoyama (b. 1985), Japanese football playerTomonobu Yokoyama (b. 1985), Japanese footballerYou Yokoyama (b. 1981),Japanese idol, singer, actor, radio host and lyricistYui Yokoyama (b. 1992), Japanese idol, member of girl-group AKB48Yuji Yokoyama (b. 1969), Japanese football player