Hermanus Siert Adolf "Hemmie" Vriens (born 10 June 1944) is a retired Dutch swimmer. He competed at the 1964 Summer Olympics in the 200 m breaststroke and 4 × 100 m medley relay but failed to reach the finals.
هيمي فرينز (بالهولندية: Hemmie Vriens) (مواليد 10 يونيو 1944) هو سبّاح هولندي، مثّل بلاده في الألعاب الأولمبية الصيفية 1964. (ar)
Hermanus Siert Adolf "Hemmie" Vriens (born 10 June 1944) is a retired Dutch swimmer. He competed at the 1964 Summer Olympics in the 200 m breaststroke and 4 × 100 m medley relay but failed to reach the finals. (en)
هيمي فرينز (بالهولندية: Hemmie Vriens) (مواليد 10 يونيو 1944) هو سبّاح هولندي، مثّل بلاده في الألعاب الأولمبية الصيفية 1964. (ar)
Hermanus Siert Adolf "Hemmie" Vriens (born 10 June 1944) is a retired Dutch swimmer. He competed at the 1964 Summer Olympics in the 200 m breaststroke and 4 × 100 m medley relay but failed to reach the finals. (en)