(born Caspar Adriaensz. van Wittel, later a.k.a. Gaspare Vanvitelli, Gasparo degli Occhiali) (1653 - September 13, 1736) was a Dutch Golden Age landscape painter.
Van Wittel was born in Amersfoort. He learned painting first from Thomas Jansz van Veenendaal for 4 or 5 years and then from Matthias Withoos for 7 years, until Withoos left Amersfoort. In Amersfoort, he likely was exposed to Dutch landscape artists such as Jan van der Heyden and Gerrit Berckheyde. His first extant works were made in Hoorn in 1672, but he relocated to Rome with his family ca. 1675 and made his career there. Like his former teacher, he joined the Bentvueghels with the nickname "Piktoors" or "Toorts van Amersfoort"(torch of Amersfort).
He married in Rome in 1697, and stayed most of his life in that city, though, between 1694 and 1710, he toured Italy and painted in places like Florence, Bologna, Ferrara, Venice, Milan, Piacenza and Naples. He is one of the principal painters of topographical views known as vedute.
Gaspar van Wittel died in Rome. His son Luigi would become a famous architect and also carries the italianized family name of Vanvitelli.
In Luigi's biography is written that his father was born in July 1656, but Van Wittel's grave in Rome states that he died at the age of 83 in 1736.