Tomasz Welna (born 27 January 1991) is a Polish professional footballer who plays as a defender for I liga club Kotwica Kołobrzeg.

[2] In 2011, he signed for Ząbkovia Ząbki in the Polish I liga, where he made thirteen appearances and scored zero goals.

[3][4] After that, he played for Cracovia,[5] Puszcza Niepołomice,[6] Stomil Olsztyn,[7] Aris Limassol,[8] Olimpia Grudziądz,[9] Widzew Łódź,[10] and Pogoń Siedlce.

On 27 July 2020, he returned to Polonia Warsaw, then competing in the fourth-tier III liga.

[11] On 3 January 2024, he left Polonia to join II liga side Kotwica Kołobrzeg.