Andrej Meszároš (Slovak pronunciation: ; in Slovak] born October 13, 1985) is a Slovak professional ice hockey defenceman currently playing for with the Tampa Bay Lightning of the National Hockey League (NHL).

Andrej Meszároš began playing for HC Dukla Trenčín in the Slovak Extraliga as a seventeen-year-old in 2002–03. After two seasons with Trenčín, he was drafted 23rd overall in the 2004 NHL Entry Draft by the Ottawa Senators. The following season, he went overseas to play junior hockey in the Western Hockey League (WHL) with the Vancouver Giants. Meszároš recorded 41 points in 59 games with Vancouver – fifth in WHL rookie scoring – and was named to the Western Conference's Second All-Star Team. He was also named the Giants' Rookie of the Year and Top Defenceman.

In 2005–06, he made the jump to the NHL with the Senators. Meszároš registered his first NHL point, an assist, on October 10, 2005, in a 6–5 shootout win over the Toronto Maple Leafs. Two months later, he scored his first NHL goal on December 9 – a game-tying goal in the third period of a shootout loss against the Vancouver Canucks. He finished his rookie season with 10 goals and 39 points, and was named to the NHL All-Rookie Team with Calgary's Dion Phaneuf. Playing on a defensive pairing with Zdeno Chára, Meszároš' plus/minus of plus-39 was tied for third in the league overall and first among rookies.