"Ha" is a 1998 single by rapper Juvenile, from his third album 400 Degreez. It was produced by Mannie Fresh. This song along with Juvenile's "Back That Thang Up" and B.G.'s "Bling Bling" put Cash Money Records, previously a little-known New Orleans Bounce label, into the pop mainstream.The song is notable for its unique rapping from Juvenile, who ends almost all of his lines with "ha". The chorus to the song is a line taken from the earlier Juvenile single "Solja Rags".

The music video was shot in September 1998 in the Magnolia Projects in New Orleans, Louisiana. It shows different highlights of ghetto life. The Cash Money Millionaires, Birdman (rapper), Lil Wayne, The Big Tymers, and B.G. (rapper) make cameos.

"Ha" peaked at #16 on the Billboard Hot R&B/Hip-Hop Singles & Tracks chart and #68 on the Billboard Hot 100.

Two remixes were recorded and also included on 400 Degreez. The first had a different beat and lyrics, and featured Juvenile's fellow Hot Boys members B.G., Lil Wayne, and Turk. The second had the same beat but different lyrics and featured Jay-Z. Jay-Z was the only guest on the album not on Cash Money Records. Rapper 50 Cent samples the songs lyrics on the song "Paper Chaser".

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