Example implementations relate to meeting passcodes. In an example, meeting passcodes can employ a meeting hub including an antenna and a controller coupled to the antenna to wirelessly receive, via the antenna, information including a first meeting passcode from a meeting device, generate a second meeting passcode in response to receipt of the first meeting passcode, cause the second meeting passcode to be sent to a registered user of meeting device, and admit the meeting device to a meeting using the second meeting passcode.