Predrag "Peja" Drobnjak (Cyrillic: Предраг "Пеђа" Дробњак; born October 27, 1975) is a former Montenegrin basketball player. At 2.11 m (6 ft 11 in), he played at the power forward and center positions. Throughout his nineteen-year career, Drobnjak had also played in the NBA.
Drobnjak started his professional career with Partizan in the 1992–93 season. He played six seasons for Partizan, winning three national titles in a row (1995, 1996 and 1997). In his last year with the club, Drobnjak played in the EuroleagueFinal Four, where they finished fourth after losing in the semi-final to Kinder Bologna, and in the third-place game against Benetton Treviso.
Before the 1998–99 season, Drobnjak signed for Efes Pilsen in Turkey. Drobnjak stayed for the next three seasons with Efes.
In July 2005, Drobnjak signed a three-year contract with Tau Cerámica in Spain. However, he was released after only a year, which followed by his signing a one-year contract with his former team Partizan.
In the 2009–10 season, Drobnjak played in the Greek Basket League with PAOK. In February 2011, Drobnjak signed with Iraklis until the end of the season. However, he decided to retire later that month.