Rikissa Magnusdotter of Sweden (ca 1285 – 17 December 1348) was a Swedish princess. She was the daughter of King Magnus III of Sweden (Magnus Ladulås) and his Queen consort Helvig of Holstein. At the age of six, she was entrusted to the nuns at St. Clara Priory (Sankta Klara kloster) in Stockholm. The nunnery had been given large donations and lands upon its foundation by King Magnus. Rikissa was the abbess of St. Clara Priory from at least 1335 until her death in 1348. ^{[1][2] [3]}