Margaret Lloyd was a Welsh Moravian worker and activist, one of the early members of the Moravian congregation in London. Hailing from Llangystennin in North Wales, she was the brother of Robert Lloyd (1707–1753), who became rector of Aber. Lloyd moved to London and initially became a Wesleyan, but in 1740 she gravitated towards the Moravian church and became a full-time helper the following year.