Theodoros "Thodoris" Kalakonas (born 28 October 1974) is a Greek water polo player who competed in the 1996 Summer Olympics (6th place), and in the 2004 Summer Olympics (4th place) with the Greek national team.
He was part of the Greek national team that won the silver medal at the 1997 World Cup in Athens and the Bronze Medal in the 2004 World League in Long Beach.At club level, Kalakonas played most notably for Greek powerhouse Olympiacos (2001–2004), with whom he won 1 LEN Champions League, 1 LEN Super Cup, 3 Greek Championships and 3 Greek Cups.