Exhibit 23.3
SPICERJEFFRIES LLP
Certified Public Accountants
4601 DTC BOULEVARD • SUITE 700
DENVER, COLORADO 80237
TELEPHONE: (303) 753-1959
FAX: (303) 753-0338
www.spicerjeffries.com
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to incorporation by reference in this Registration Statement on Form S-3 for United States Commodity Index Funds Trust of our report dated February 28, 2019 relating to the statements of financial condition as of December 31, 2018 and 2017, including the schedules of investments as of December 31, 2018 and 2017, and the related statements of operations, changes in partners’ capital and cash flows for the years ended December 31, 2018, 2017 and 2016 of United States Commodity Index Funds Trust and its series United States Commodity Index Fund, included in the Form 10-K of United States Commodity Index Funds Trust for the year ended December 31, 2018, and to the reference to our Firm as “Experts” in the Prospectus, which is part of this Registration Statement.
/s/ Spicer Jeffries LLP
Denver, Colorado
April 24, 2019