(2 Şubat 1941 – 2 Nisan 2015) Amerikan şairi. Matematiksel şair ve “ötekiakım” şiirin eleştirmeni. İlk kitabı 1966 yılında Poemns adı ile yayınlandı. Matematiksel şiir yayınlamaya başlamadan önce birçok görsel şiir kitabı yayınladı. Grumman matematiksel şiiri matematiği tartışmaktan -ya da Oulipo akımında olduğu gibi matematiksel algoritmaları içeriği seçmek için kullanmaktan ziyade, matematiği yapan şiir olarak tanımlar. Haiku'dan esinlenerek “matematiku” adında bir tür ortaya atmıştır.
Poemns (visual haiku), privately printed, 1966; reprinted by the Runaway Spoon Press, 1997.Preliminary Rough Draft of a Total Psychology (theoretical psychology), privately published, 1967.A Strayngebook (children's book), Score Publications, 1987.An April Poem (visual poetry), Runaway Spoon Press, 1989.Spring Poem No. 3,719,242 (visual poetry), Runaway Spoon Press, 1990.Of Manywhere-at-Once, Volume One (memoir/criticism), The Runaway Spoon Press, 1990; 2nd edition, 1991; 3rd edition, 1998.Mathemaku 1-5 (mathematical poetry), Tel-Let, 1992.Barbaric Bart Meets Batperson and Her Indian Companion Taco (play), Stage Whisper, 1992.Barbaric Bart Visits God (play), Abscond Press, 1993.Rabbit Stew (play), Hairy Labs Publishing Company, 1994.Mathemaku 6-12 (mathematical poetry), Tel-Let, 1994.Of Poem (textual poetry), dbqp press, 1995.Vispo auf Deutsch, Score Publications/Runaway Spoon Press, 1995.Mathemaku 13-19 (mathematical poetry), Tel-Let, 1996.min. kolt., matemakuk, Budapest: Kalligram, 2000.Xerolage 30, LaFarge WI: Xexoxial Editions, 2001.Writing to Be Seen, Volume 1, Light & Dust, 2001.Writing to be seen: an anthology of later 20th century visio-textual art, Runaway Spoon Press and Score Publications, 2001.Doing Long Division in Color, Port Charlote FL: The Runaway Spoon Press, 2001.Mathemaku 20 - 24, Tel-let, 2003.Cryptographiku 1- 5, Tel-let, 2003.Excerpts from Poem’s Search for Meaning, Sticks Press, 2004.Bob Grumman’s Greatest Hits 1966-2005, Pudding House, 2004.Shakespeare & the Rigidniks : A Study of Cerebral Dysfunction, Runaway Spoon Press, 2006.From Haiku to Lyriku, The Runaway Spoon Press, 2007.April to the Power of the Quantity Pythagoras Times Now: A Selection of Mathemaku, Otoliths, 2008.Poem, Demerging, Phrygian Press, 2010.This is visual poetry, chapbookpublisher, 2010.A Preliminary Taxonomy of Poetry, The Runaway Spoon Press, 2011.