Insurance Building, Government building at Capitol Campus in Olympia, United States.

The Insurance Building is a rectangular government building on the Capitol Campus, its long axis running north to south. Its north and south ends carry colonnades supporting an unembellished frieze and pediment, while the east and west sides are rows of windows. It was built of Wilkeson stone, a sandstone quarried in Pierce County, and houses the offices of the Insurance Commissioner and State Auditor.

The building was completed in 1921 as the second structure on the Capitol Campus and required major repairs following the 1949 Olympia earthquake. This restoration work allowed it to survive the subsequent decades without significant structural problems.

The building's name comes from its original tenant, the state Insurance Commissioner, whose offices remain here alongside the State Auditor. The north and south ends carry colonnades beneath an unembellished frieze and pediment, while the east and west sides are rows of windows. Just north stands the Winged Victory Monument, the state's World War I memorial by Alanzo Victor Lewis, installed in 1938.

The Insurance Building stands on the north side of the Capitol Campus, with the Winged Victory Monument, the state's World War I memorial, directly to its north. The building is a working government office, so visitors should expect security screening and should check access arrangements before arriving.

The original campus plan called for an identical twin building on the opposite side of the Legislative Building, but it was never constructed. This missing structure remains a reminder of an unrealized part of the original vision.