Audio conference participant identification is performed to identify audio-only participants and display information indicative of their identities within user interfaces of conferences. Name information of an audio-only caller accessing a first conference at a first time is determined to be unknown. The name information is stored in a record responsive to obtaining the name information from a device of the audio-only caller. The name information is displayed in a first user interface element of the first conference, where the first user interface element is associated with the audio-only caller. The name information is retrieved from the record responsive to the audio-only caller accessing a second conference at a second time after the first time. The name information is displayed in a second user interface element of the second conference associated with the audio-only caller.