David Tomasz Weiss (born 29 May 2007) is a Finnish football player who plays as a midfielder for Italian club Sassuolo U18 academy team.
[1][2] Weiss started to play football in youth teams of TuPS and PK Keski-Uusimaa in Tuusula.
[3] On 23 July 2022, Weiss made his senior debut with the PK Keski-Uusimaa first team, in the third-tier Kakkonen at the age of 15, playing the second half in a 4–4 home draw against Reipas Lahti.
[7][8][9] Weiss was part of the Finland U16 squad that won the friendly tournament Baltic Cup in July 2023.
In the tournament Finland drew with Ukraine and Germany, 2–2 and 1–1 respectively, before winning Liechtenstein 3–0, placing 2nd in the group and advancing to the Elite round.