Olof Persson Stille was a pioneer settler in the Swedish colony of New Sweden. He served as the first chief justice of the Upland Court.
Olof Persson Stille was born in Sweden on the island of SoIö in Roslagen, northeast of , the son of Per Stille, supervisor of the Penningby estate in Länna parish, Norrtälje Municipality in Uppland, north of . In 1627 when Per Stille retired, he was granted land by the owners of Penningby on a nearby island called Humblö in the . This was where Olof Stille married and began his family.
In May 1641, the Charitas departed for New Sweden. The passengers included Olof Stille, his wife, a daughter and son. Also on board were Olof's younger brother Axel Stille and the family of Måns Svensson Lom, whose wife appears to have been Olof's younger sister.
In New Sweden, Olof Stille settled at a place located between present Crum Creek and Ridley Creek. The property of Stille was at the mouth of Ridley Creek, now Eddystone, Pennsylvania. Local Indians became acquainted with Olof Stille. They considered his heavy, black beard unusual conferring the name Tequirassy on him because of it. Stille became a leader among the settlers and played a key role in promoting the July 1653 list of grievances, which was submitted to Governor Johan Printz, protesting his strict rule. Printz considered this action mutiny and subsequently returned to Sweden.
After the surrender of New Sweden to the Dutch West India Company, Governor Peter Stuyvesant agreed to allow the Swedish colonists living north of the Christina River to govern themselves. The Upland Court at Chester in Delaware County, Pennsylvania, was organized in 1656. Olof Stille served as its chief justice until his retirement in 1664.