Blub, short for Berliner Luft- und Badeparadies ("Berlin air- and bathing paradise"), was a water park in the Britz area of Neukölln district in Berlin, Germany. First opened in 1985, it was shut down in 2002 following health concerns, and the 3.5-hectare (8.6-acre) site fell into disrepair. In 2016, the buildings on the site were severely destroyed by fire. Demolition work began in 2020; the site will be developed into a dwelling complex with 638 apartments.

The site is located at Buschkrugallee 64, 12359 Berlin, near the Teltow Canal.