Timon Janis Wellenreuther (born 3 December 1995) is a German professional footballer who plays as a goalkeeper for Dutch Eredivisie club Feyenoord.

[11] Three days later, on 6 February 2015, he made his first Bundesliga start, keeping a clean sheet, in a 3–0 win over Borussia Mönchengladbach.

[15] After his loan spell at RCD Mallorca came to an end, Wellenreuther remained out of the first team for most of the 2016–17 season and was demoted to the reserve side, where he made nine appearances.

[16] On 25 June 2015, Wellenreuther moved abroad for the first time when he joined Segunda División side Mallorca on a season-long loan to gain some first team experience.

Wellenreuther signed a two-year contract at Dutch football club Willem II on 23 May 2017.

[24] By the beginning of the 2021–22 season, Van Crombrugge recovered and reclaimed his starting position, pushing Wellenreuther back to the bench.

[25] On 16 August 2022, Anderlecht announced that Wellenreuther would be loaned to Eredivisie club Feyenoord for the 2022–23 season.

[27] In June 2023, Feyenoord announced that Wellenreuther had joined the club on a permanent deal, with him signing a 2-year contract.