Episode 3 could refer to a number of different episodes from different series:
- The third episode of the television series The Flash (CBS), "Watching the Detectives".
- The third episode of the television series Birds of Prey, "Prey for the Hunter".
- The third episode of the television series Arrow, "Lone Gunmen".
- The third episode of the television series The Flash (The CW), "Things You Can't Outrun".
- The third episode of the television series Constantine, "The Devil's Vinyl".
- The third episode of the television series Supergirl, "Fight or Flight".
- The third episode of the television series DC's Legends of Tomorrow, "Blood Ties"".
- The third episode of the first season of the web series Vixen, "Episode 3".
- The third episode of the second season of the web series Vixen, "Episode 3".
- The third episode of the web series Blood Rush, "Down the Rabbit Hole".
- The third episode of the web series Chronicles of Cisco, "Episode 3".
- The third scene of the web series Stretched Scene, "Stretched Scene #3".
- The third episode of the first season of the web series Freedom Fighters: The Ray, "Episode Three".
- The third episode of the television series Black Lightning, "Lawanda: The Book of Burial".
- The third episode of the second season of the web series Freedom Fighters: The Ray, "Episode Three".
- The third episode of the television series Batwoman, "Down Down Down".
- The third episode of the web series Mister Parker's Cul De Sac, "Mr. Parker After 5".
- The third episode of the television series Superman & Lois, "The Perks of Not Being a Wallflower".