Princess Connect! Re:Dive (Japanese: プリンセスコネクト！Re:Dive, Hepburn: Purinsesu Konekuto! Ridaibu) is a Japanese role-playing video game developed by Cygames. It was released in Japan on February 15, 2018, for Android and iOS, and on May 22, 2018, for Microsoft Windows via DMM Games. Mobile version would later be released in other regions.

The game was announced in August 2016 as a sequel to the social network game Princess Connect! (abbreviated as プリコネ, Prikone), which was released on February 18, 2015, and ended service in June 2016.

The game was co-developed by CyberAgent and Ameba Business Division (Girl Friend Beta) and Cygames (Rage of Bahamut and Granblue Fantasy), by utilizing the strengths of both companies. It is a dating sim game that incorporates online RPG elements such as guild battles.

An anime television series adaptation produced by CygamesPictures aired from April to June 2020. A second season aired from January to March 2022.

On March 30, 2023, Crunchyroll, the publisher for the global version of the game, announced that the game would be ending service on April 30.

Princess Connect! Re:Dive is a real-time action role-playing game. Players can form a party of up to five characters to participate in various modes such as main quests and player versus player (PvP) arena modes. New characters can be obtained via a gacha mechanic or can be exchanged with character-specific Memory Pieces (the latter is not possible for event-exclusive characters). Players are also able to form clans to qualify for participation in Clan Battles, which are similar to raid battles in a typical massively multiplayer online role-playing game, or freely chat with one another using text or in-game emojis in the clan room.

Every playable character in the game has a regular attack, two Skills, an EX Skill, and one Union Burst. Players generally have no control over the activation of characters' skills and attacks, which are automatically activated at predetermined times based on character. EX Skills are stat-gaining skills that are activated on the start of each battle. A Union Burst is a powerful skill which, unlike other skills, can be manually activated by the player at any time the character's Union Burst Meter (also known as TP in-game) is full. However, all PvP arena modes are strictly on autoplay, where the character's Union Burst is activated as soon as their TP is fully charged.

The game takes place in the year 2033 in a virtual reality video game titled Legend of Astrum, a fantasy action role-playing game populated by various races including humans, "beastfolk" (humanoids possessing animal traits) among others, where thousands were trapped with no means to log out in an incident later known as "Minerva's Imprisonment (ミネルヴァの懲役, Mineruva no Chōeki)". The protagonist is a player named Yuuki, who serves as a Princess Knight, a retainer to one of Legend of Astrum's chief developers, the Seven Crowns, who goes on a journey across Legend of Astrum's eponymous landmass.