333 S. Garland Avenue
Suite 1410
Orlando, FL 32801, USA

O +1 407 898 2727
F +1 407 895 1335

www.rsmus.com

Exhibit 16.1

May 2, 2023

Securities and Exchange Commission

Washington, D.C. 20549

Commissioners:

We have read The LGL Group, Inc.’s statements included under Item 4.01(a) of its Form 8-K filed on May 2, 2023, and we agree with such statements concerning our firm.

/s/ RSM US LLP