Ya-ya may refer to one of the following.
- Ya Ya (Lee Dorsey song), a 1961 song by Lee Dorsey, covered by Dalida, Petula Clark and others
- A trombone technique of Tricky Sam Nanton
- The Ya-Ya series of novels by Rebecca Wells
- Ya-Ya, a traditional drinking song better known as Limerick
- A 1994 album (Ya Ya) and song (Le Yaya) by French Canadian pop star Mitsou
- Ya Ya (film), a 2013 Tamil language movie.
- Yaya (disambiguation)