Stephen J. Murphy is an American politician who is the Suffolk County register of deeds, serving since 2017.

From 1997 until 2016, he served as an at-large member of the Boston City Council.

[1] Murphy was formerly a member of the Boston City Council.

He first joined the Council in February 1997, following the resignation of at-large member Richard P. Iannella, who had been elected Register of Probate of Suffolk County;[2] Murphy had finished fifth in the November 1995 race for four at-large seats, and served the remainder of Iannella's term.

Murphy was then elected to a two-year at-large term in November 1997, and reelected eight times.