Exhibit 23.1

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Consent of Independent Registered Public Accounting Firm

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Rare Element Resources, Ltd.

Littleton, Colorado

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-255920) and Form S-8 (No. 333-170022 and 333-184983) of Rare Element Resources Ltd. of our report dated March 22, 2022, relating to the consolidated financial statements which appears in this Form 10-K.

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/s/ BDO USA, LLP

Spokane, Washington

March 22, 2022