Justin Theroux wears a Rolex Submariner

Justin Theroux plays Tom Watson in The Girl on the Train (2016), Tate Taylor's adaptation of Paula Hawkins's novel: the composed suburban husband whose surface hides the film's worst secret. Emily Blunt is Rachel, the alcoholic divorcee who watches a stranger's marriage from her commuter train and is pulled into a disappearance.

A Rolex Submariner has been attributed to Watson. The brand is plausible for the role, but the identification rests on a single aggregator entry, the watch is not legible in any frame available here, and no specific reference is supported. It stays family-level and unconfirmed, not pinned to a model or a scene.