Schlossgarten Karlsruhe, English garden and cultural heritage monument in Karlsruhe, Germany.

Schlossgarten Karlsruhe is a landscape park on the north side of Karlsruhe Palace, laid out largely as an English landscape garden with broad meadows, groups of trees and a lake. The palace tower's avenues, including Richard-Willstätter-Allee and the Blue Ray, run as rays through the grounds. A 2.7 km palace garden railway circles the park, and a stone wall or ha-ha marks its edge.

The garden was founded in 1715 and went through different style changes from baroque and French designs before becoming an English landscape garden in 1787. These shifts show how garden tastes changed over the decades.

The garden's fan-shaped layout is echoed by the paths that radiate from the palace tower, including the Richard-Willstätter-Allee and the Moltkestraße. Since 2001 a ribbon of 1645 blue majolica tiles, the "Blue Ray", has run from the tower to the Majolika-Manufaktur on the garden's north-western edge. The lawns may be walked on, and the grounds host city anniversaries, opera performances, the Bierbörse and the Medieval Fantasy Spectaculum.

The garden is bordered by a stone wall and an aha (ha-ha) and lies directly north of the palace, with the Botanical Garden to its southwest and the Fasanengarten to the east. The lawns may be entered. A 2.7 km palace garden railway runs through the park.

The artificial valley and cave from the Chinese garden of 1767–1773 survive beside the Orangery, not in a hidden corner of the park. Visitors walking there can still see the sunken terrain that was once viewed from a terrace, a remnant of the western garden laid out under Grand Duke Karl Friedrich.