Mikael Jantunen (born 20 April 2000) is a Finnish professional basketball player for Paris Basketball of the LNB Pro A. He played college basketball for the Utah Utes.

Jantunen grew up in Helsinki and initially played football before switching to basketball at the age of 11. He competed for HBA-Märsky from 2016 to 2019, while attending the Helsinki Basketball Academy.^[1] In October 2018, Jantunen committed to Utah over offers from Loyola Marymount, Oregon State, Georgia Tech, and Stanford.^[2]

Jantunen started three games as a freshman and averaged 6.7 points and 4.9 rebounds per game.^[3] He suffered a fractured nose in December 2020, forcing him to wear a protective mask.^[4] On 9 January 2021, Jantunen scored a career-high 20 points in a 79–73 loss to Oregon.^[5] As a sophomore, Jantunen averaged 8.9 points, 4.5 rebounds, and 1.5 assists per game. Following the season, he opted to turn professional.^[6]

Jantunen represented Finland in the 2018 FIBA U18 European Championship. He averaged 17 points, 10 rebounds and 3.6 assists per game, shooting 72.3 percent from the field.^[2] Jantunen played several games for the Finnish senior national team in the FIBA EuroBasket 2022 Qualifier round. He was forced to miss time with Utah in February 2021 to play in the matches.^[13]

Jantunen was part of the Finland squad in the EuroBasket 2022 and the 2023 FIBA World Cup.