Emilia Tennyson (1811-1887), normally known within her family as Emily, was a younger sister of Alfred Tennyson and the fiancee of Arthur Hallam, for whom Tennyson's great poem, In Memoriam, was written.

Emilia met Hallam through her brother, but they were never to marry, as he died suddenly while travelling abroad in 1833. She later married Richard Jesse, and their elder son was given the forenames Arthur Henry Hallam.