Exhibit

We consent to the incorporation by reference in the registration statements (No. 333‑221121 and No. 333-221122) on Form S-3 and registration statements (Nos. 333-218036, 333-196252, 333-181585, 333-162888, 333-137273, 333-116528, 333-55838, and 333-35245) on Form S-8 of Carrizo Oil & Gas, Inc. of our report dated February 28, 2017, with respect to the consolidated balance sheet of Carrizo Oil & Gas, Inc. as of December 31, 2016, and the related consolidated statements of operations, stockholders’ equity, and cash flows for each of the years in the two-year period ended December 31, 2016, which report appears in the December 31, 2017 annual report on Form 10‑K of Carrizo Oil & Gas, Inc.