Steve Kosta is an Australian former rugby league footballer who played in the 1970s.
Kosta made his first grade debut for South Sydney in 1971.
Kosta made a total of 4 appearances for Souths but was not included in the grand final side which won their 20th premiership defeating St George in the final 16–10.
In 1972, Kosta featured more prominently for Souths and played in the club's elimination final loss against St George ending their premiership defence.
This rugby league football biography relating to an Australian born in the 1950s is a stub.