Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Plan Administrator

Synovus Financial Corp.

2011 Director Stock Purchase Plan:

We consent to the incorporation by reference in the registration statements (No. 333‑174264 and No. 333-187465) on Form S-8 of Synovus Financial Corp. of our reports dated March 29, 2019, with respect to the statements of financial condition of the Synovus Financial Corp. 2011 Director Stock Purchase Plan (the Plan) as of December 31, 2018 and 2017, the related statements of operations and changes in plan equity for each of the years in the three-year period ended December 31, 2018, and the related notes, which report appears in the December 31, 2018 annual report for Form 11-K of the Synovus Financial Corp. 2011 Director Stock Purchase Plan.

/s/ KPMG LLP

Atlanta, Georgia

March 29, 2019