2023 Knoxville Challenger

The 2023 Knoxville Challenger was a professional tennis tournament played on indoor hard courts. It was the 19th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Knoxville, United States between 6 and 12 November 2023.

Seeds

 * 1 Rankings are as of October 30, 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Nishesh Basavareddy
 * 🇺🇸 Strong Kirchheimer
 * 🇬🇧 Johannus Monday

The following player received entry into the singles main draw as a special exempt:
 * 🇺🇸 Aidan Mayo

The following players received entry from the qualifying draw:
 * 🇺🇸 Murphy Cassone
 * 🇩🇪 Sebastian Fanselow
 * Evgeny Karlovskiy
 * 🇺🇸 Cannon Kingsley
 * 🇺🇸 Thai-Son Kwiatkowski
 * 🇩🇪 Mats Rosenkranz

The following players received entry as lucky losers:
 * 🇲🇩 Alexander Cozbinov
 * 🇺🇸 Christian Harrison

Singles

 * 🇺🇸 Alex Michelsen def. 🇺🇸 Denis Kudla 7–5, 4–6, 6–2.

Doubles

 * 🇺🇸 Cannon Kingsley / 🇻🇪 Luis David Martínez def. 🇺🇸 Mac Kiger / 🇺🇸 Mitchell Krueger 7–6(7–3), 6–3.