Jörn Renzenbrink (born 17 July 1972) is a retired professional tennis player from Germany.

He started his campaign with a straight sets victory over South African Grant Stafford, followed by a four-sets defeat of Morocco's Karim Alami and then a win over Italian Andrea Gaudenzi.

Renzenbrink never won a singles tournament on the ATP Tour but was runner-up on one occasion, at the 1994 KAL Cup Korea Open.

He did however win a doubles title, with fellow German Markus Zoecke, as qualifiers, at the 1995 Hall of Fame Tennis Championships in Newport, Rhode Island.

[1] He won two ATP Challenger Series tournaments during his career, the first in Andorra in 1993 and the other at Aachen in his home country.