Sean Arnold is an English actor.
He is best known for his roles as Mr. Llewelyn in Grange Hill in the 1970s and 1980s, and as Barney Crozier in the 1980s BBC television series Bergerac. He later appeared as the Chief Constable in Merseybeat.
Sean Arnold played Commander Telson in the 1981 BBC Radio 4 science fiction serial Earthsearch and the 1982 sequel Earthsearch II.
