Willard Otis Wylie (December 25, 1862 – November 30, 1944), of Boston, Massachusetts, was a noted philatelic editor and writer.

In 1913 the newly formed Severn-Wylie-Jewett Company, a partnership formed by Charles Esterly Severn, W. W. Jewett, and Wylie, purchased Mekeel's Weekly Stamp News and named Charles Severn its president and editor.

As part of his duties, Wylie was managing editor of Mekeel's Handbooks, each of which contained articles and monographs on important philatelic subjects.

When Mekeel's Weekly Stamp News was moved from Boston, Massachusetts, to Portland, Maine, in 1940, Eveleen Mary Weldon Severn took over as editor and Wylie was named Editor Emeritus.

Willard Wylie was named to the American Philatelic Society Hall of Fame in 1945.