Exhibit 32.1
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
For purposes of Section 1350 of Chapter 63 of Title 18 of the United States Code, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of The Joint Corp., a Delaware corporation (“Company”), does hereby certify, to such officer’s knowledge, that:
The Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (“Form 10-K”) of the Company fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: March 12, 2026 |  | /s/ Sanjiv Razdan |
|  | Sanjiv Razdan President and Chief Executive Officer (Principal Executive Officer) |

Dated: March 12, 2026 |  | /s/ Scott Bowman |
|  | Scott Bowman Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) |