Lawrence James Fullan (born August 11, 1949) is a Canadian former ice hockey forward. He played 4 games in the National Hockey League with the Washington Capitals during the 1974–75 season. The rest of his career, which lasted from 1972 to 1976, was spent in the minor American Hockey League.

Signed as a free agent in 1972 by the Montreal Canadiens, Fullan never played with the parent club and was left exposed in the 1974 NHL Expansion Draft where he was claimed by the Washington Capitals. He played four games for the Capitals and spent most of the next two years in the minors before retiring from active professional play in 1976.

Fullan graduated from Cornell University in 1972, where he was also a member of the Quill and Dagger society.

His older brother is Michael Fullan.