Marvel's Spider-Man: The City that Never Sleeps is a collection of downloadable content (DLC) developed by Insomniac Games and published by Sony Interactive Entertainment for the 2018 video game Spider-Man. Based on the Marvel Comics superhero Spider-Man, it is inspired by the long-running comic book mythology and adaptations in other media. Released in three distinct chapters, The Heist, Turf Wars, and Silver Lining, The City that Never Sleeps' main storyline takes place after the events of Spider-Man, and follows the titular character as he confronts a crime wave led by the physically-enhanced mob boss Hammerhead.

He is aided throughout the DLC by the thief Black Cat, Police Captain Yuri Watanabe, mercenary Silver Sable, and reporter Mary Jane Watson. The game is presented from the third-person perspective with a primary focus on Spider-Man's traversal and combat abilities. Spider-Man can freely move around New York City, interacting with characters and undertaking missions, and unlocking new gadgets and suits by progressing through the main story or completing tasks. The player is able to complete side missions away from the main story to unlock additional content and collectible items.

Combat focuses on chaining attacks together against numerous foes while avoiding damage, using the environment and webs to incapacitate foes. The City that Never Sleeps was released worldwide for the PlayStation 4 beginning with The Heist in October 2018. This was followed by Turf Wars in November and concluded with Silver Lining in December.