Iran are placed 12th with six points from five games, while Canada are a place below with five points from the same number of matches.
Both teams started the competition on a positive note. Iran won two of the first three games, while Brazil won both their openers.
USA will take on Iran in a FIVB Volleyball Men’s Nations League fixture on Thursday.
While Bulgaria will be eager to get their first win, Iran would like to climb up the table when they face each other on Tuesday.