MacKenzie Weegar (born January 7, 1994) is a Canadian professional ice hockey defenceman currently playing for the Florida Panthers in the National Hockey League. Weegar was drafted with the Panthers last pick, 206th overall, in the 2013 NHL Entry Draft. Weegar is the first cousin of former NHL player and current broadcaster Craig Rivet. Weegar wears uniform number 52, the same number Rivet wore during his career.
Weegar played major junior hockey with the Halifax Mooseheads in the Quebec Major Junior Hockey League. After his selection to the Panthers, Weegar was signed following his second season with the Mooseheads in 2013–14 to a three-year, entry-level deal on May 29, 2014.
Weegar turned professional during the 2014-15 AHL season, appearing in 31 games for the Panthers' AHL affiliate San Antonio Rampage. Weegar also skated in 21 games for the Cincinnati Cyclones of the ECHL.