Colonel Walter Liberty Vernon was an English architect who migrated to Australia and pursued his career as an architect in Sydney, New South Wales. In his role as the New South Wales Government Architect he is noted for designing multiple government buildings, many of which are extant with listings on national and state heritage registers.

The New South Wales Government Architect, an appointed officer of the Government of New South Wales, serves as the General Manager of the Government Architect's Office (GAO), a multi-disciplinary consultancy operating on commercial principles providing architecture, design, and engineering services, that is an agency of the government within NSW Public Works.