How to say "locker" in Japanese

• ロッカーJLPT N2approx.Common
  nounThe standard word for a locker: a metal compartment with a door, locked with a coin or key, as at a station, gym, pool, school, or workplace. This is the word you want.
  学生がくせいたちはめいめい個人用こじんようのロッカーがある。↗

  Each of the students has his own locker.
• 戸棚とだなJLPT N2approx.Common
  nounReally means a cupboard, cabinet, or closet for storing household things; its gloss 'locker' is marginal, so it is seldom the word you want for a locker in the ロッカー sense.
  この本ほんは戸棚とだなの上うえです。↗

  This book goes on the top shelf.

Use 「ロッカー」 for lockable coin/gymschool-style lockers; 戸棚 is really a cupboard or shelf unit and only marginally means locker, so it is rarely the word you want for a locker.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• ロッカーlocker
• 戸棚とだなcupboard
• 格納箱かくのうばこcabinet