Amos Pieper (born 17 January 1998) is a German professional footballer who plays as a defender for Arminia Bielefeld.
On 28 January 2019, Pieper moved from Borussia Dortmund II to 2. Bundesliga club Arminia Bielefeld. He made his professional debut for Bielefeld in the 2. Bundesliga on 8 February 2019, coming on as a half-time substitute for Brian Behrendt in the 3–0 away win against Jahn Regensburg.