Zigismunds Sirmais (born May 6, 1992 in Riga) is a Latvian javelin thrower.

Sirmais achieved his best result of 86.66 while winning the 2016 European Athletics Championships.

He previously threw the world junior record of 84.69 m on June 22, 2011 in Bauska, Latvia.

[1] He is competing for the club Arkādija under coach Valentīna Eiduka.

This biographical article relating to Latvian athletics is a stub.