Leopold "Poldek" Socha (28 August 1909 – 12 May 1946) was a Polish sewage inspector in the city of Lwów (now Lviv, Ukraine).

During World War II, Socha used his knowledge of the city's sewage system to shelter a group of Jews from Nazi persecution and their supporters of different nationalities.

Socha lived in a poor neighborhood of Lwów, Poland and worked for the municipal sanitation department and secretly as a burglar and thief.

Socha, his wife Magdalena, and a co-worker named Stefan Wróblewski continued feeding and sheltering the refugees with their own resources.

Survivor Krystyna Chiger recounted her time as a child in the sewers being aided by Socha to the USC Shoah Foundation Institute for Visual History and Education, as well as in her 2008 memoir, The Girl in the Green Sweater: A Life in Holocaust's Shadow.