Original Stanno Matchworn football shirt Top Oss 2021/22

Jan Lammers(born 10 May 1995) is a Dutch professional footballer who plays as a centre-back. He formerly played for RKC Waalwijk, Borneo, TOP Oss, and De Graafschap.

Lammers is a youth exponent from De Graafschap. He made his professional debut on 13 September 2014 in an Eerste Divisie game against SC Telstar. He replaced Robin Pröpper after 63 minutes in a 3-2 home win.

After having spent some months playing in Indonesia for Borneo, Lammers returned to the Netherlands, where he signed for Eerste Divisie club TOP Oss on 12 March 2020.

In June 2022, Lammers returned to De Graafschap on a free transfer, signing a two-year contract. After playing regularly for the club, he suffered a back injury which sidelined him the first half of 2024. In June 2024, it was announced that his expiring contract would not be extended, making him a free agent.