Oluf van Steenwinckel (died 1659) was a Danish building master and engineer, probably the son of Hans van Steenwinckel the Younger. In the 1640s he worked at Nykøbing Castle among other places and from 1651-52 he was Copenhagen's first City Surveyor (Danish: Stadskonduktør), involved in the cedestral registration and parcelling of Frederick III's New Copenhagen. In June 1659, during the Northern Wars, he participated in a failed attempt to recapture Kronborg Castle and was executed by the Swedish.[1]