Philip Howard Lewis Jr. (September 4, 1925 – July 2, 2017) was an emeritus professor of landscape architecture who promoted the "environmental corridor" concept.

Charles Little, author of Greenways for America, describes Lewis as the "...most inventive (and occasionally controversial) figure in regional landscape planning theory in the country".

[citation needed] His education at the University of Illinois culminated in a trip to California to view contemporary landscape architecture projects with his favorite teacher, Hideo Sasaki.

After working at the Goetz Nursery, he attended Harvard Graduate School of Design, (1950–1953), where he earned a master's degree in landscape architecture.

[citation needed] Lewis completed a summer internship with the National Park Service in 1952, where he learned about governmental agency interdisciplinary efforts to maintain the landscapes under their jurisdiction.

[9] Lewis became the founder and director of the Environmental Awareness Center, part of the School of Natural Resources and the College of Agriculture and Life Sciences.

[4] Lewis contributed to the origins of geographic information systems technology with his application of maps using transparent overlays for environmental planning.

[12] Lewis, along with Ian McHarg and Angus Hills, are credited with the development of the natural resource inventory approach and map overlays as a crucial part of the design process.

[20] The title recognizes the work of Lewis and his wife, Elizabeth (Libby), who served for 26 years on the Dane County Parks Commission.

[21] The Lewis family helped establish the Friends of Dane County Parks Endowment, managed by the Madison Community Foundation.