| 2023 Knoxville Challenger | |
|---|---|
| Date | 6–12 November |
| Edition | 19th |
| Surface | Hard (Indoor) |
| Location | Knoxville, United States |
| Champions | |
| Singles | |
 Alex Michelsen | |
| Doubles | |
Cannon Kingsley /  Luis David Martínez | |
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.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| USA | Michael Mmoh | 101 | 1 |
| USA | Aleksandar Kovacevic | 109 | 2 |
| USA | Alex Michelsen | 112 | 3 |
| USA | Zachary Svajda | 143 | 4 |
| USA | Emilio Nava | 148 | 5 |
 FRA | Titouan Droguet | 166 | 6 |
 AUS | |||
 CHN | Shang Juncheng | 176 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
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:
Alex Michelsen def. Denis Kudla 7–5, 4–6, 6–2. Cannon Kingsley / Luis David Martínez def. Mac Kiger / Mitchell Krueger 7–6(7–3), 6–3.The 2017 Knoxville Challenger was a professional tennis tournament played on indoor hard courts. It was the fourteenth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Knoxville, United States between 7 and 12 November 2017.
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