'The Shambalas' pamphlet - Among Bill's magazines in his secret cellar, a pamphlet for a band known as "The Shambalas" can be found. This is a reference to the hidden city sought after by Nathan Drake in Uncharted 2: Among Thieves.
Uncharted 13 newspaper - In the Hotel Grand, there are a number of newspapers on the ground with a headline stating: "Uncharted 13: A Lush Movie — Justin Bieber as Drake." Drake refers to Nathan Drake from Uncharted.
JAK Company poster - Near the Mob Attack Note, the player can find a poster about employee rights. This poster is made by the JAK company, which is a reference to the Jak and Daxter series, has a phone number 1-800-555-TLOU, and has the URL for The Last of Us website on it.
Jak and Daxter plush toys - Right after meeting Henry and Sam, the player will be able to enter a child's room. On a dresser, Jak and Daxter plush toys can be seen.
Nathan Drake plush toy - In the same child's room as the Jak and Daxter plush toys, one can also see a Nathan Drake plush toy on the bed from Uncharted.
Naughty Dog mousepad - The player will be able to enter another room after meeting Henry and Sam. In the room, on a computer desk, the player can find a blue mousepad with the Naughty Dog logo across it, the developers of The Last of Us.
I Want to Ride My Bicycle - Next to the bike store, before entering the toy store, there is a poster on the wall that shows a bicycle and says "I WANT TO RIDE MY BICYCLE". This is a reference to lyrics from the song "Bicycle Race" by British rock band Queen.
Uncharted board game - In the toy store, on a shelf in the far end, the player can find an Uncharted board game.
Jak and Daxter board game - In the same toy store as the Uncharted board game, a player will find a Jak and Daxter board game on a shelf just to the left of the Uncharted board game.
O'Sullivan's Pub - The bar found at the Pittsburgh bridge, O'Sullivan's Pub, bears a striking resemblance to the pub in the opening of Uncharted 3: Drake's Deception. The name "O'Sullivan's" is also a reference to Nathan Drake's companion, Victor Sullivan.
Java Jak - A coffee cart called "Java Jak" can be found in the O'Sullivan's Pub. This is a reference to the Jak and Daxter franchise.
Ish - Throughout "The Suburbs" chapter, the player can find several notes that mention a character named Ish, who seems to be a fisherman. He could be a reference to the character Ishmael from Herman Melville's novel Moby-Dick.
The Game of STRIFE - In the ranch house while Joel and Tommy are looking for Ellie on horseback, in one of the rooms there is a shelf in which a darker version of The Game of Life can be found, depicted as The Game of STRIFE.
PlayStation 3 console - Right after Ellie escapes David into the blizzard, she goes through an electronics store. Inside the store on a shelf near the windows, the player can find a PlayStation 3 console with two DualShock controllers.
Faithful Dog - At the Lakeside resort, there is a pet store called "Faithful Dog". This is a reference to Naughty Dog, the creators of The Last of Us.
Uncharted Nathan Drake costume - In the Halloween costume store in the abandoned mall, the player can find packaged Nathan Drake costumes from Uncharted 2: Among Thieves.
Jak X Jak costume - In the same Halloween store, the player can find packaged Jak costumes from Jak X, just beside the Uncharted costumes.
Raja's Arcade - In the comic book American Dreams and the DLC Left Behind, there is an arcade named "Raja's Arcade" in an abandoned Boston mall. The name "Raja" is a reference to the characters Eddy Raja and Rika Raja from the Uncharted series.
Jak X: Combat Racing arcade game - In Raja's Arcade, the player can find a dysfunctional arcade game called Jak X: Combat Racing, which is a real video game created by Naughty Dog, as part of the Jak series.
Music record references - In a music store after Ellie kills several Cannibals, there are several song records found on the wall that reference real-world bands and musicians. Some include "FullFunk", in style to Daft Punk, "Blaggard Boys", in style to AC/DC, and "The Shambalas" which is a reference to the mystical city in Uncharted 2: Among Thieves.
Stress Cereal - In many parts of the game, including the chapters "The Suburbs" and "Tommy's Dam", a box of cereal can be found, referencing "Trix" cereal. The name "Trix" is replaced with "Stress", and the cereal's mascot holds a glass of wine.
"Deadly fungus" newspaper - In the first chapter of Uncharted 3: Drake's Deception, on top of the bar table, the player can find a newspaper with a headline of "Scientists are still struggling to understand deadly fungus" which refers to cordyceps brain infection.
Tess may be a reference to the girl named Tess from the Jak and Daxter series.
The Uncharted board game that can be found in the "Pittsburgh" chapter is a real-life board game by Naughty Dog.
The Easter egg of the "deadly fungus" newspaper added in Uncharted 3: Drake's Deception was said of being a "screw-up." When Naughty Dog added the Easter egg, they said that they expected to reveal The Last of Us before releasing Uncharted 3: Drake's Deception, although, they didn't, and they forgot about the game. They state how they almost spoiled the secrecy of The Last of Us themselves.
What some fans thought was an Easter egg was actually a phone sex line, however this was a mistake on Naughty Dog's part and therefore not an Easter egg.
It's possible that Marlene's clothes at the end of the game are deliberately similar to Elena's clothes from Uncharted: Drake's Fortune.
Bill's kukri is similar in appearance to Tenzin's kukri from Uncharted 2: Among Thieves.
The name of the survivor group "The Marauders" in Factions is a reference to a group of the same name in Jak 3.
In The Last of Us art book, there is a picture of Chloe Frazer at the store in Pittsburgh.