Jens Toornstra (born 4 April 1989) is a Dutch footballer who plays for Eredivisie side Feyenoord. He is usually an attacking midfielder and is praised for his perseverance and his endurance.
Toornstra was born in Leiderdorp. In his youth, he played eight years for amateur football club Alphense Boys in the Tweede Klasse C. In his last year he scored 20 goals for the team. He impressed so much Kees Jansma recommended Toornstra to ADO Den Haag. Initially, the scouts of ADO Den Haag did not believe Toornstra would be as good but ADO Den Haag bought Toornstra for the reserve squad.
In the summer of 2009 Toornstra came to ADO Den Haag with a contract until July 2012. He made his debut in the 3–0 victory against Willem II. Soon, he became first team player for ADO and quickly gained interests from AZ, FC Twente and Roda JC. Toornstra signed a new improved contract on 4 July that same year until the summer of 2013.