O2 Planning + Design Inc. (O2) is an award-winning firm of landscape architects, planners, urban designers, environmental scientists, and civil engineers. Founded in 1991, the firm specializes in landscape planning and environmental design of rapidly changing and highly valued landscapes. The firm's solution areas include: Campus Planning + Facility Design; Parks, Recreation + Tourism; Regional Landscape Planning; Urbanism; Working Landscapes; and Green Infrastructure.

O2's unique combination of creative design, extensive environmental knowledge, and advanced technology results in responsible solutions that integrate ecology, culture, and economics. The firm's solutions reflect and enhance the essential character of the place, providing a sustainable framework for development. O2's work involves the intersection of natural habitats and processes with human endeavours. At broad regional scales, land use plans reflect wise stewardship of the land; while at finer scales, natural and cultural forms provide artistic inspiration for contemporary landscape architecture.