1891 in Denmark

Incumbents

• Monarch - Christian IX
• Prime minister - J. B. S. Estrup

Sports

• 3 May Vejle Boldklub is founded.

Births

• 5 January Grethe Glad, fashion designer and educator
• 2 March Gerda Henning, designer
• 7 April - Ole Kirk Christiansen, entrepreneur and businessman, inventor of Lego
• 1 October - Svend Methling, actor

Deaths

• 8 April – Elise Holst, stage actress
• 9 June – Ludvig Lorenz, mathematician and physicist
• 15 August Louise Sahlgreenm actress
• 28 November – Christen Berg, politician
• 21 December – Georg Emil Hansen, photographer