Yaya may refer to:

• Yaya, Çan
• Yaya, Congo, district of Niari Department in the Republic of Congo
• Yaya, Russia, an urban-type settlement in Kemerovo Oblast, Russia
• Yaya (river), a river in Kemerovo Oblast, Russia
• Yaya Island, Russia
• La Yaya Dam, in Cuba
• Yaya, DR Congo, district of Kwilu Province in the Democratic Republic of Congo
• Yaya Mongombala, DR Congo, district of Kwilu Province in the Democratic Republic of Congo

• Faouzi Yaya (born 1989), Algerian football player
• Yaya DaCosta (born 1982), America's Next Top Model contestant
• YaYa Gosselin (born 2009), American actress
• Yaya Han (born 1980), American cosplayer
• Yaya Migansi (c. 1850–1932), princess of Dahomey, present-day Benin
• Yaya Sanogo (born 1993), French football player
• Yaya Touré (born 1983), Ivorian football player
• Urassaya Sperbund (Yaya; born 1993), Thai actress

• Yaya, a 2009 fictional character from the light novel series Unbreakable Machine-Doll
• Yaya Nanto, a character from the anime series Strawberry Panic
• Yaya Yuiki, a character from the manga series Shugo Chara!
• Yaya Dub, a character played by Maine Mendoza in a comedy segment called "Kalyeserye" in the Filipino noontime show Eat Bulaga!

• "Yaya" (song), a 2020 single by 6ix9ine
• Ya Ya, a 1962 single by Lee Dorsey
• Yaya, a 1982 album of Nino Buonocore
• "Yaya", a song by Tara VanFlower from My Little Fire-Filled Heart, 2005
• Yaya Kim, South Korean solo music project by Kim Eunji

• Yaya (military), infantry military units of the Ottoman Empire and some other medieval Anatolian emirates
• YaYa's Flame Broiled Chicken, an American fast food chicken chain
• YaYa, a panda

• Ya-ya (disambiguation)