Sphere was a science fiction fanzine by L.T. Thorndyke.
Sphere was published in the 1950s in Cantonment, Florida, U.S.A.
Volume 1, no. 2 was released in Nov. 1956. Volume 2, nos. 2-6 were issued between March and December 1957. Volume 3, numbers 1, and 2 were published in January/February, and March/April of 1958.
Sphere contained articles, fiction, letters, and poetry. Issue 6 contained a poem by Leslyn MacDonald Mocabee.