Taruia Franz Krainer (born 1 June 1991) is a French Polynesian road cyclist. He is currently the sports director of team UC Cholet 49.

Krainer was born in Arue, French Polynesia, and was educated at la Mennais high school. He moved to France at the age of 16 to pursue a career in cycling and to study.

He raced with UC Briochine from 2009 to 2011, then joined the Vendée U team in 2012. In 2014 and 2015 he was a stagiaire (intern) with Team Europcar. In 2017 he won the Prix Marcel Bergereau. In 2018 he placed third in the Entre Brenne et Montmorillonnais. He also won the 2018 Tour Tahiti Nui. In June 2020 he was appointed sports director of UC Cholet. In 2022, he competed in the mixed team relay with the French Polynesian team at the 2022 UCI Road World Championships.