505 Games S.p.A. is an Italian video game publisher based in Milan. It was founded in 2006 as a subsidiary of Milan-based Digital Bros.

In March 2015, 505 Games purchased 2.67% stock of Swedish game developer Starbreeze Studios. In January 2016, 505 Games announced that they will shift their focus from publishing games for other developers to developing their own intellectual properties. In October 2016, 505 Games has announced through Koji Igarashi, their collaboration in publishing Bloodstained: Ritual of the Night from Igarashi's own ArtPlay, DICO and Inti Creates, though Inti's involvement has been reduced. At the Sony E3 press conference on 11 June 2018, 505 Games announced a partnership with Remedy Entertainment to publish Control.

In April 2015, 505 Games was awarded the title of Best Indie Games Label at the MCV Awards.

505 Games acquired Australia-based Infinity Plus Two, the developers of the Puzzle Quest games in January 2021.

505 Games is working with Rabbit and Bear Studios to publish Eiyuden Chronicle: Hundred Heroes, a spiritual successor to the Suikoden series. The partnership was announced February 2021.

On 27 June 2022 D3 Go! was acquired by 505 Games. The acquisition also included the intellectual property of the Puzzle Quest games.