Iļja Vestermans (28 September 1915 – 2005) was a Latvian football forward of Jewish origin.
For most of his career he played with the Riga Jewish community sports club Hakoah.
He made his debut in the Latvia national football team in 1935 against Lithuania and scored two goals in the match.
In the 1938 FIFA World Cup qualification Vestermans scored in both matches as Latvia beat Lithuania and scored the single goal for Latvia against Austria in the decisive match for the World Cup spot.
Vestermans was considered one of the most talented footballers in Latvia, rated especially high for his dribbling skills.