Ingeborg Esbensdatter of Kalundborg (died in Slesvig 1267) was an influential Danish landlord and vassal.
She was the daughter of
Esbern Snare
Esbern Snare (1127–1204), also known as Esbern the Resolute, was a '' høvding'', or chieftain, royal chancellor and crusader. His family were members of the powerful Hvide clan. In 1192, during the Crusades and after the fall of Jerusalem, h ...
and the Swedish noble Helena Guttormsdotter, and by her mother the half sister of Canute, Duke of Estonia. She married the nobleman Peder Strangesen (d. 1241). Ingeborg was known for her donations to the church and was a powerful figure in Denmark by her ownership of her late father's castle,
Kalundborg
Kalundborg () is a Danish city with a population of 16,659 (1 January 2025),