President

Section 906 Certification under Sarbanes Oxley Act

I, Brian E. Binder, certify that:

1.	I have reviewed this report, filed on behalf of Deutsche CROCI® U.S. Fund, a series of Deutsche Investment Trust, on Form N-CSRS;
2.	Based on my knowledge and pursuant to 18 U.S.C. § 1350, the periodic report on Form N-CSRS (the “Report”) fully complies with the requirements of § 13 (a) or § 15 (d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

5/30/2017	/s/Brian E. Binder
	Brian E. Binder
	President

Chief Financial Officer and Treasurer

Section 906 Certification under Sarbanes Oxley Act

I, Paul Schubert, certify that:

1.	I have reviewed this report, filed on behalf of Deutsche CROCI® U.S. Fund, a series of Deutsche Investment Trust, on Form N-CSRS;
2.	Based on my knowledge and pursuant to 18 U.S.C. § 1350, the periodic report on Form N-CSRS (the “Report”) fully complies with the requirements of § 13 (a) or § 15 (d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

5/30/2017	/s/Paul Schubert
	Paul Schubert
	Chief Financial Officer and Treasurer