Johannes Härteis (born 22 February 1996) is a German tennis player.

Härteis achieved a career high ATP singles ranking of world No. 300 in November 2020.

He made his ATP main draw debut at the 2019 Hamburg European Open in the doubles competition, partnering Daniel Altmaier.

ATP Challenger and ITF Futures finals

Singles: 2 (0–2) LegendATP Challenger Tour (0–0)ITF Futures Tour (0–2)Finals by surfaceHard (0–0)Clay (0–1)Grass (0–0)Carpet (0–1)

ResultW–LDateTournamentTierSurfaceOpponentScoreLoss0–1Germany F18, IsmaningFuturesCarpet (i) Aldin Šetkić7–6(2–7), 6–7(6–8), 3–6Loss0–2Austria F2, KramsachFuturesClay Nerman Fatić6–1, 3–6, 1–6

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