The Union of Social Democrats – Mensheviks and Rural Workers (Latvian: Sociāldemokrātu mazinieku un laukstrādnieku savenība, SDML) was a political party in Latvia in the inter-war period led by Marģers Skujenieks.
The party was established in July 1921 as a breakaway faction from the Latvian Social Democratic Workers' Party.
They won seven seats in the 1922 elections, becoming the third-largest faction in the 1st Saeima.
The party was dissolved in 1929, with its leadership going onto establish the Progressive Association.
This article about a Latvian political party is a stub.