Marcos Eduardo Guerra Sobral (born 1960) is a Brazilian botanist. Since 2009 he has been an adjunct professor of Botany at the Federal University of São João del-Rei. As of the end of 2020, Sobral has authored 79 publications and published 237 taxon names, particularly within the Eugenia, Myrcia, and Plinia genera of the family Myrtaceae. The standard author abbreviation Sobral is used to indicate this person as the author when citing a botanical name.