Larry Fitzgerald -- RETURN FROM RWANDA ... After Hearing Aid Mission

Larry Fitzgerald just got back from a 9,000 mile mission to Rwanda -- where the NFL superstar PERSONALLY handed out hearing aids to hundreds of people in need ... and TMZ Sports has the pics.

It's just the latest trip the Arizona Cardinals receiver took with the Starkey Foundation -- a charity dedicated to helping the hearing impaired all over the world

We're told Larry has been working with the organization since 2007 -- and has participated in more than 10 trips to various places with the group.

This time, Larry and S.F. went to Butare, Rwanda ... where they distributed more than 2,000 devices. We're told Larry doesn't just give out the ear-pieces, he also tests them out with their new owners to make sure everything's working properly.