The 2021 Men's EuroHockey Club Trophy I was the 44th edition of Europe's secondary men's club field hockey tournament organized by the European Hockey Federation and the first edition since it was renamed from the EuroHockey Club Trophy to the EuroHockey Club Trophy I. It was held from 30 September to 3 October 2021 at Post SV Wien in Vienna, Austria.
The following six teams with the following seeding participated in the tournament. Cardiff & Met and Western Wildcats withdrew before the tournament.[2]