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

In connection with the Quarterly Report of Mitcham Industries, Inc. (the “Company”) on Form 10-Q for the quarterly period ended July 31, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Guy Malden, Co-Chief Executive Officer of the Company, and Robert P. Capps, Co-Chief Executive Officer and Chief Financial Officer of the Company, each hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Guy Malden                                             

Guy Malden

Co-Chief Executive Officer and Executive Vice President of Marine Systems

(Co-Principal Executive Officer)

September 7, 2018

/s/ Robert P. Capps                                      

Robert P. Capps

Co-Chief Executive Officer, Executive Vice President of Finance and Chief Financial Officer

(Co-Principal Executive Officer and Principal Financial Officer)

September 7, 2018