SDCL § 21-52-5: Persons entitled to redeem.

The owner, mortgagor, judgment debtor, or the successors of either, having any interest in the property sold and the holders of any lien, legal or equitable, subsequent and junior to that from which redemption is to be made, on the property sold, or any part thereof, or any share or interest therein, shall have the right to redeem from a sale of such property described in § 21-52-1, in the manner hereinafter described. Such persons are denominated redemptioners.