Royal Arch may refer to:
- Royal Arch (structure), erected in Dundee to commemorate a visit to the city by Queen Victoria and Prince Albert in 1844.
- A vault said to have been built underneath Solomon's Temple
- Royal Arch Route, a hiking trail to the Royal Arch natural bridge in Grand Canyon National Park.
- Royal Arches (Yosemite), granite arches in Yosemite National Park.
- In Freemasonry:
- The Holy Royal Arch, an appendant Masonic degree conferred in Great Britain, and much of Europe and the Commonwealth
- Royal Arch Masonry, the equivalent Royal Arch body as practiced as a part of the York Rite