- For transcripts of in-game radio messages, see Radio Messages.
The Shortwave Radio or Service Radio is the primary means of communication between the player and other characters. Because shortwave radios operate within a small band of frequencies, the signal is easily disrupted.
- Main article: BioShock
At the beginning of Welcome to Rapture, Jack is asked (by Atlas) using the Would You Kindly trigger to pick up the shortwave service radio in the Bathysphere. The radio is carried throughout the whole game and is automatically activated by an incoming transmission. The service radio is set for a specific frequency which is disrupted by Sander Cohen during Jack's exploration of Fort Frolic. Cohen most likely changed Rapture Radio's station frequency to match that of Jack's shortwave. Rise, Rapture, Rise can be heard playing at the beginning of the frequency disruption.
- Main article: BioShock 2
Subject Delta also uses a radio in BioShock 2. It appears to be covered with a thin layer of seaweed, slime, and coral. This radio is most likely built into Delta's suit somehow, since it activates as soon as he awakens after first being revived at a Vita-Chamber.
Burial as Sea - Episode 1
- Main article: Burial at Sea - Episode 1
Burial at Sea - Episode 2 
- Main article: Burial at Sea - Episode 2
Elizabeth uses a Radio to keep in contact with Atlas as well as some other important characters. When Elizabeth imagines that Booker is speaking to her, his voice will come from her radio.
Behind the Scenes
- In the first BioShock, the antenna on the radio in the bathysphere and on the HUD icon are reversed.
- In Burial at Sea, the radio icon is the same as the one used in the original BioShock.