Mary Jane Lamond (born 1960) is a Canadian Celtic folk musician who performs traditional Canadian Gaelic folk songs from Cape Breton Island. Born in Kingston, Ontario, she graduated from Westmount High School in Montreal and then the Celtic Studies program with a minor in Music at St. Francis Xavier University in Antigonish, Nova Scotia. Known for presenting traditional material within a contemporary soundscape, Lamond first gained widespread notice as vocalist on Ashley MacIsaac's 1995 hit single "Sleepy Maggie." She then had a solo Top 40 hit in Canada with "Horo Ghoid thu Nighean," the first single from her 1997 album Suas e!.

Since 2000, Lamond has composed and produced tracks for film and participated in a number of charitable projects. Her 2012 collaboration with fiddler Wendy MacIsaac, Seinn, was named one of the top 10 folk and americana albums of 2012 by National Public Radio in the United States.