Heljä Tuulia Mirjam Liukko-Sundström (June 15, 1938 – May 21, 2024) was a prolific Finnish ceramicist, potter, artist and children's writer.

[2] At age 17 she met Kauko Sundström, who would become her partner and husband, in a relationship that would last over sixty years until his death.

[3][4][5] At Arabia, she worked alongside noted designers Birger Kaipiainen, Toini Muona [fi] and Rut Bryk where she continued to develop as an artist, calling the experience "my university".

[1] At Arabia she developed a unique style that showcased the human experience, life, "naïve expression, and sometimes mild sadness.

[1] In the 1970s, she began to specialize in ceramic print tiles, mugs and dishes, many featuring her signature hare design.

[1] Due to campaigning by Liukko-Sundström, a small area in the factory remained open for artist residencies.

Inside Liukko-Sundström grew tropical plants such as bananas and bougainvillea to inspire her art and connect with nature.

I don't mind if an amateur painter makes copies of my work, but this is a big business and commercial activity at Marimekko.

"[19] Liukko-SundströmAt the time she did not demand compensation, but aimed to spark a conversation around the fair use and attribution of designs.

[26] Liukko-Sundström's works have been exhibited and found in museums across Finland and internationally, in the United States, Canada, Germany, Australia, Japan and Mexico.