His two-year-old son Hadrien donned the titular character’s iconic green suit with a yellow scarf and carried around a rose to complete the costume.
The pair went trick-or-treating at Rideau Hall in Ottawa on Monday.
Trudeau’s wife, Sophie Gregoire Trudeau, and their other two children Xavier and Ella-Grace, joined them as well. Xavier dressed up as the Joker from the Batman movies, and Ella-Grace was a witch.
Last year, the Trudeaus dressed up as Star Wars characters as they took their family out for the night; Trudeau was Han Solo and Sophie was Princess Leia.