Original Errea football shirt Iceland 2018/19

Gylfi Þór Sigurðsson(born 8 September 1989) is an Icelandic professional footballer who plays as an attacking midfielder for Valur and the Iceland national team.

Gylfi began his professional career with Reading in the Championship and in 2010, was sold to TSG Hoffenheim, which was Reading's biggest sale at the time. He was voted Player of the Season for two consecutive seasons: for Reading in 2009–10 and for Hoffenheim in 2010–11. After a season back in English football with Swansea City, he joined Tottenham Hotspur for a reported £8 million transfer fee. In 2014, he moved back to Swansea as part of an exchange for Ben Davies. In 2017, he transferred to Everton for a then club-record transfer fee of £40 million, and remained there for five years.

Gylfi made his debut for Iceland in 2010. He played for the team at their first major tournament, UEFA Euro 2016, where it reached the quarter-finals. He also played at his national team's first ever FIFA World Cup in 2018. As of 16 October 2023, Gylfi has obtained 80 caps and scored 27 goals, making him Iceland's all-time top scorer.