A chair 10 for seating in rows is disclosed. In particular, an armrest arrangement 21 for such chairs is disclosed. The arrangement has an arm support 22 which is pivoted to a support brace 23. When the seat 15 is pivoted into its standby position the arm support 22 and support brace 23 lie alongside each other and have a transverse width D6 which is less than the front to rear dimension D5 of the adjacent seat 15 and backrest 14. In particular, the armrest arrangement can be provided with a cup holder 145 which remains horizontal, notwithstanding the pivoting action of the chair armrest arrangement. This reduces the incidence of beverage and food spillage.