| 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:
Aidan MayoThe 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 2013 Knoxville Challenger was a professional tennis tournament played on hard courts. It was the tenth edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Knoxville, United States between 4 and 10 November 2013.
The 2014 Knoxville Challenger was a professional tennis tournament played on indoor hard courts. It was the eleventh edition of the tournament, which was part of the 2014 ATP Challenger Tour. It took place in Knoxville, United States between 4 and 9 November 2014.
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The 2022 Knoxville Challenger was a professional tennis tournament played on indoor hard courts. It was the 18th edition of the tournament which was part of the 2022 ATP Challenger Tour. It took place in Knoxville, United States between 7 and 13 November 2022.
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The 2023 Cary Challenger II was a professional tennis tournament being played on hard courts. It was the 11th edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Cary, North Carolina, United States between 11 and 17 September 2023.
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