Gerasimos "Makis" Voltirakis (born 14 May 1968) is a Greek retired water polo player and current water polo coach.

[1] He was part of the Greece men's national water polo team that won the silver medal at the 1997 World Cup in Athens, being voted the tournament's best goalkeeper.

[2] Voltirakis played for Greek powerhouses Ethnikos and Olympiacos, with whom he won the 2001–02 LEN Champions League in Budapest, being the captain of the team.

He was also runner-up of the 2000–01 LEN Champions League in Dubrovnik with Olympiacos.

[3][4] Voltirakis was captain of the Olympiacos squad that won the 2002 Triple Crown (LEN Champions League, Greek Championship, Greek Cup).