Anthony Etherin is a UK-based poet, publisher, podcaster, and musician. He is best known for composing constraint-based poetry, such as anagrams and palindromes, and for combining these techniques with traditional poetic forms. He is the inventor of the aelindrome, a new lettristic constraint, in which letters are parsed according to premeditated, palindromic numerical sequences.
Anthony runs Penteract Press, a publisher of books and chapbooks of constrained, formal, and visual poetry. He also presents The Penteract Podcast, conducting in-depth interviews with poets and other artists.