Harald Östergren was a Swedish ceramicist and designer who worked at Upsala-Ekeby in the first half of the 20th century. He contributed to the mill's development through his stylish and contemporary ceramic works.
His production mainly included vases, bowls and decorative objects with simple, elegant shapes and often earthy glazes. He was known for his solid craftsmanship and sense of proportion, which made his works both functional and aesthetically pleasing. His work reflects the quest for quality and sustainable design of the time.