Topić was a member of the Yugoslavia national team (representing FR Yugoslavia) that won the silver medal at the 1996 Summer Olympics in Atlanta, Georgia, US. Over five tournament games, he averaged 2.2 points, 3.6 rebounds and one assist per game. Topić won the gold medal at EuroBasket 1997 in Spain. Over nine tournament games, he averaged 5.8 points, 2.6 rebounds and 0.6 assists per game while shooting 72.7% from the field. He was a member of the Yugoslavia team that won the gold medal at the 1998 FIBA World Championship in Athens, Greece. Over eight tournament games, he averaged 6.7 points, 4.7 rebounds and 0.8 assists per game. Topić won the bronze medal at EuroBasket 1999 in France. Over nine tournament games, he averaged 3.9 points, 2.1 rebounds and 0.6 assists per game.