Samuel Sean Collington, of Prospect Park, was shot twice in the chest during what was an attempted robbery in the 2200 block of North Park Avenue around 1:30 p.m, police said.
He was pronounced dead at an area hospital a short time later.
The DelCo native was a political science and philosophy major and was set to graduate next year, the university said in a statement.
"We are deeply saddened to inform you of the tragic death of senior Samuel Collington. Samuel, 21, of Delaware County, suffered fatal gunshot wounds in an off-campus incident on Sunday afternoon," Temple Public Safety Director Charlie Leone said.
"This attack, which occurred at the 2200 block of Park Avenue, north of Susquehanna, only further highlights the senseless gun violence that continues to grip the city of Philadelphia.
"We mourn the loss of a bright and thriving political science student, and share in the wrenching grief of his family and friends.
"Samuel was set to graduate this spring from the College of Liberal Arts, and already was succeeding in his field, interning as a Democracy Fellow with the city. This is a true tragedy in every sense of the word. As a father, this truly breaks my heart and is incomprehensible."
Interboro High School remembered Collington in a social media post.
No arrests have been made in the shooting.
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