Anna Lewis, 27, had been seen on CCTV leaving her work placement at Southmead Hospital on Thursday 13 April.
Avon and Somerset Police said she walked into a police station in North Devon on Wednesday afternoon, and was "safe and well".
Previously police said they were "growing concerned for her welfare" and the disappearance was out of character.
Ms Lewis was reported missing by her family last Friday and specialist police teams began searching areas in north and central Bristol on Tuesday.
A student nurse who was reported missing after she was last seen leaving a hospital, has been found.