K. J. Hippensteel (born May 8, 1980) is a retired American tennis player.

Hippensteel attended Stanford University, where he was a four-time All-American. He was the #1 ranked player in NCAA tennis his sophomore and senior year. Before attending Stanford, Hippensteel was a US Open Boys' Doubles champion with eventual Stanford teammate David Martin in 1998. He also has ITF junior wins over Guillermo Coria and Andy Roddick. He reached a career-high ATP singles ranking of World No. 150 in November 2004, before being slowed by elbow and back injuries.

Result	Year	Tournament	Surface	Partner	Opponents	Score
Win	1998	US Open	Hard	David Martin	Andy Ram Lovro Zovko	6–7, 7–6, 6–2

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Jul 2001	USA F17, Chico	Futures	Hard	Jaymon Crabb	3–6, 6–4, 3–6
Win	1–1	Sep 2002	USA F24B, Costa Mesa	Futures	Hard	Marc Silva	6–4, 6–3
Win	2–1	Jun 2003	USA F13, Yuba City	Futures	Hard	Kean Feeder	6–3, 7–6(7–2)
Win	3–1	Aug 2003	USA F22, Decatur	Futures	Hard	Matthew Hanlin	4–6, 6–1, 6–2
Win	4–1	May 2004	USA F12, Tampa	Futures	Clay	Brian Baker	1–6, 7–6(7–5), 6–2
Loss	4–2	Jun 2004	USA F14, Sunnyvale	Futures	Hard	Alejandro Fabbri	4–6, 3–6
Loss	4–3	Jun 2004	USA F15, Auburn	Futures	Hard	Amer Delić	6–7(3–7), 3–6
Loss	4–4	Aug 2004	Denver, United States	Challenger	Hard	Brian Baker	6–7(5–7), 4–6
Win	5–4	Oct 2004	Tiburon, United States	Challenger	Hard	Kevin Kim	6–3, 6–3

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Win	1–0	May 2003	USA F10, Vero Beach	Futures	Clay	Ryan Haviland	Márcio Carlsson Rafael De Mesa	6–2, 6–4
Win	2–0	May 2003	USA F12, Tampa	Futures	Clay	Ryan Haviland	Huntley Montgomery Ryan Sachire	6–2, 7–6(8–6)
Win	3–0	Aug 2003	USA F22, Decatur	Futures	Hard	Matthew Hanlin	David Martin Scott Lipsky	6–3, 3–6, 6–4
Loss	3–1	Nov 2003	Waco, United States	Challenger	Hard	Ryan Haviland	Devin Bowen Ashley Fisher	4–6, 6–7(4–7)
Loss	3–2	Feb 2004	Canada F1, Calgary	Futures	Hard	Ryan Haviland	Rajeev Ram Ryan Sachire	7–6(7–4), 6–7(7–9), 3–6
Win	4–2	Feb 2004	Canada F2, Edmonton	Futures	Hard	Ryan Haviland	Paul Logtens Matwé Middelkoop	6–3, 4–6, 7–6(7–5)
Win	5–2	May 2004	USA F12, Tampa	Futures	Clay	Ryan Haviland	Ryan Sachire Huntley Montgomery	3–6, 6–4, 6–2
Win	6–2	Jun 2004	USA F14, Sunnyvale	Futures	Hard	Ryan Haviland	David Martin Scott Lipsky	7–6(9–7), 6–7(1–7), 6–3
Win	7–2	Sep 2004	Covington, United States	Challenger	Hard	Paul Goldstein	Hugo Armando Nicolás Lapentti	6–3, 6–3

• K. J. Hippensteel at the Association of Tennis Professionals
• K. J. Hippensteel's Australian Open profile
• K. J. Hippensteel's Circuit Player Of The Week article