Henry I, Count of Tecklenburg (c. 1115 – 22 November 1156) was a German nobleman.
Henry I was born around 1115 as the eldest son of Egbert I and his second wife, Adelaide of Zutphen.
He married Eilika (b. c. 1120), a daughter of Count Elimar II of Oldenburg.
He succeeded his father as Count of Tecklenburg around 1150, and was a vassal of the Bishops of both Münster and Osnabrück.
He owned many small properties, all over Westphalia and Frisia, and consistently expanded his power base.