Born in Athens, on August 6, 1935, Stelios Serafeidis was a Greek footballer, the younger brother of forward Charalambos "Babis" Serafeidis.
Serafeidis started his career at Aegaleo, moved on to Apollon Athens and eventually transferred to AEK. His first years were spent on the bench in the shadow of Michalis Delavinias but eventually, after his predecessor's retirement, Serafeidis got his chance.
He was AEK's goalkeeper during their first three post-WW II championships (1963, 1968, 1971). He retired in 1972.
Serafeidis was capped only once in his career in a friendly against Poland (1963). As of 1973, he has worked in various capacities at AEK, currently in the youth academy.