Mesdag may refer to: Taco Mesdag (1829–1902), Dutch banker and painter
Hendrik Willem Mesdag (1831–1915), Dutch marine painter Museum Mesdag, in The Hague, Netherlands Panorama Mesdag, a 1881 panorama Sina Mesdag-van Houten (1834–1909), wife of Hendrik Willem Mesdag Rob van Mesdag (1930–2018), Dutch Olympic rower Jan Mesdag (1953–1988), Dutch singer