James Morrison Harris (November 20, 1817 – July 16, 1898) was a Representative from the third district of Maryland.

Born in Baltimore, Maryland, Harris was educated at private institutions in the city.

He then entered Lafayette College in Easton, Pennsylvania in 1833 where he studied law.

Harris was admitted to the bar in 1843 and commenced practice in Baltimore.

He declined to be a candidate for renomination in 1860 and resumed the practice of law.