H&M is a Swedish multinational retail-clothing company.

H&M may also refer to:

• Harold and Maude, a film
• Hartley & Marks Publishers, a Canadian publishing firm
• Howard and Moore Complete Checklist of the Birds of the World, an ornithological checklist
• Hudson & Manhattan Railroad, now operated as PATH (rail system)
• Henry Molaison, a famous patient in neuroscience who, after removal of hippocampus for seizures, had difficulties in formation of memories