The ex-Jets superstar was just presented with a Doctor of Humane Letters honorary degree from the Icahn School of Medicine at Mt. Sinai in New York on Thursday ... where he took the stage and was participated in the hooding ceremony.

Martin was honored for his on-and-off field accomplishments ... receiving praise for his Curtis Martin Job Foundation, which provided financial support to single parents and people with disabilities, as well as providing medical attention to people in developing countries.

On top of that, the dude was a freakin' beast on the field ... he was a 2-time first team All Pro selection, a 5-time Pro Bowler and oh yeah, he's in the hall of fame.

This right here though has gotta take the cake.