Vladimir Mitrofanovich Arnoldi (Russian: Влади́мир Митрофа́нович Арно́льди)(Kozlov (Michurinsk), Russia (1871-1924)) was a Russian professor of biology. He was a Corresponding Member of Russian Academy of Sciences and scientifically listed a number of valuable plants of the Malay Archipelago in Malaysia.
He lived in the Russian city of Tambov for much of his life.
The standard author abbreviation Arnoldi is used to indicate this individual as the author when citing a botanical name.