[4] Beins made his debut for the Netherlands U–21 team in 2017 during a test series against Germany in Mönchengladbach.

[5] Later that year he won a gold medal with the team at the EuroHockey Junior Championship in Valencia, Spain.

[7][5] Teun Beins made his senior debut for the Oranje in 2019 during a season one of the FIH Pro League.

[8][5] He has since gone on to make a number of appearances for the national team, before being named in the official squad for the first time in 2022.

[2] As a defender, Beins scored three times for the Orange squad from a penalty corner during the 2023 Men's FIH Hockey World Cup in India.