Ishiyama
Ishiyama is a Japanese surname. Notable people with the surname include:

 George Ishiyama (1914–2003), Japanese-American businessman
 John Ishiyama (born 1960), political scientist
 Masumi Ishiyama (born 1981), Japanese cricketer

Fictional characters:
 Yumi Ishiyama, main character from the French animated TV series Code Lyoko and Code Lyoko: Evolution. Principal Ishiyama, secondary character from Danny Phantom
 Ken Ishiyama, a character in My Hero Academia

See also
 Ishiyama Hongan-ji, a Japanese building

Japanese-language surnames