Colby Nicky Robak (born April 24, 1990) is a Canadian former professional ice hockey defenceman. He played in the National Hockey League (NHL) with the Florida Panthers and Anaheim Ducks.

Robak played major junior hockey with the Brandon Wheat Kings of the Western Hockey League (WHL). He was selected by the Florida Panthers in the 2nd round (46th overall) of the 2008 NHL Entry Draft.

During the 2014–15 season, Robak was traded by the Panthers to the Anaheim Ducks in exchange for Jesse Blacker and a conditional draft pick on December 4, 2014.^[1]

Robak was not tendered a new contract by the Ducks and after going unsigned in the off-season, belatedly agreed to a one-year AHL contract with the Rochester Americans on September 28, 2015.^[2] In the 2015–16 season, Robak was a fixture on the blueline for the Americans, adding 5 goals and 20 points in 73 games.

For a second successive off-season, Robak was an un-signed free agent until he agreed to a professional try-out deal with the Stockton Heat of the AHL, affiliate to the Calgary Flames, to begin the 2016–17 season on October 14, 2016.^[3] Robak enjoyed early success with the Heat, compiling 5 assists in just 6 games and leading the AHL in Plus–minus before he left the club, to sign a guaranteed one-year deal with fellow AHL club the Utica Comets, affiliate to the Vancouver Canucks, on November 2, 2016.^[4]

On October 5, 2018, Robak signed a one-year deal with Vaasan Sport of the Finnish Liiga. This marked the first time he has played outside of North America. After a solitary season in Finland, Robak continued his European career, agreeing to a multi-year contract with German club, Schwenninger Wild Wings of the DEL on November 19, 2019.