Exhibit

We hereby consent to the incorporation by reference in the Registration Statement on Form S-3 (No. 333-175226, 333-185733, 333-197026 and 333-203548) and S-8 (Nos. 333-86876, 333-99849, 333-120623, 333-125017, 333-130489, 333-145027, 333-145029, 333-159989, 333-167185, 333-167186, 333-167187, 333-181675, 333-183767, 333-183768, and 333-183769) of United Community Banks, Inc. of our reportdated February 27, 2019 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.