Wilmer Lanier Barrow (July 26, 1903 – August 29, 1975) was an American electrical engineer, inventor, teacher, industrial manager, and a counselor to government agencies.

[3] He obtained a BSEE degree in 1926 from Louisiana State University, and a doctorate from the Technical University of Munich in 1931.

[4] During the pre-World War 2 development of radar at Massachusetts Institute of Technology, Barrow performed research on microwaves, inventing waveguide in 1936 and the horn antenna in 1938.

[5] He was vice president for research, development and engineering of the Sperry Rand Corporation.

[6] In 1943 he received the IEEE Morris N. Liebmann Memorial Award In 1966 he received the IEEE Edison Medal.