Morten Thorsby

Stabæk

Thorsby started his youth career in IL Heming but joined FK Lyn in 2009. While playing in Lyn he was drafted into the boys-15 national team. In 2012, he joined the youth ranks of Stabæk. He made his first team debut in the 2013 1. Divisjon, as a substitute in four matches. Stabæk was promoted, and he made his first-tier debut in April 2014 against Molde.

SC Heerenveen

On 2 June 2014, Thorsby signed a five-year contract with Eredivisie side SC Heerenveen.

Sampdoria

On 11 January 2019, Thorsby signed a four-year pre-contract with Serie A side Sampdoria. The contract will run through the 2023 season. He joined the club on 1 July 2019. He made his debut on 4 November in the 1–0 away win against SPAL, in which he played the full match. After that game he slowly rose in the team's hierarchy, becoming a starter in midfield alongside Albin Ekdal. On 21 June 2020, he scored his first goal for Sampdoria scoring the 2–1 consolation goal in the away defeat to Inter Milan. The following year, he was confirmed as a starter alongside Ekdal, and he scored 3 goals in 35 total appearances. The day before the start of the 2021–22 season, Thorsby decided to change his jersey number from 18 to 2 to raise awareness about the Paris Agreement – the number 2 signifying the first aim of the agreement to hold "the increase in the global average temperature to well below 2 °C".

Union Berlin

On 19 July 2022, German club Union Berlin announced Thorsby's…

On 21 May 2026, Thorsby was included in the 26-man squad selected by Norway national team manager Ståle Solbakken for the 2026 FIFA World Cup.

Club

As of match played 17 May 2026

International

As of match played 26 June 2026

Thorsby is known for his commitment to environmentalism and is an advocate for stronger actions on climate change. He established the We Play Green foundation to encourage the football community to adopt environmentally friendly initiatives, and has met with municipal and national leaders in Italy while at Sampdoria in support of improved climate policy. In August 2021, he switched his shirt number to 2 to raise awareness of climate change. The digit represents the target of the internationally-adopted Paris Agreement of keeping global warming "well below" 2 °C above pre-industrial times, in order to avoid dangerous levels of climate change. He was named 'Young Athlete of The Year' at The BBC Green Sport Awards 2022.