Yam yam, along with Yam Yam and other variations, may refer to:

• a speaker of the Black Country dialect of the UK
• Yamyam or Abdulkadir Hersi Siyad (1946–2005), Somali poet
• Yamyam Gucong (born 1993), Filipino actor and comedian
• Siu Yam-yam (born 1950), Chinese actress
• Yağmur Sarıgül (born 1979), nicknamed "Yamyam", member of the Turkish band Manga
• Yam Yam (album), 1995 album by the jazz musician Mark Turner