South Dakota Codified Laws
Chapter 09 - Unlawful Contracts
Section 53-9-7 - Contract in restraint of marriage void.

53-9-7. Contract in restraint of marriage void.
Every contract in restraint of marriage of any person other than a minor is void.

Source: CivC 1877, §962; CL 1887, §3586; RCivC 1903, §1280; RC 1919, §901; SDC 1939, §10.0707.