Hugo Erich Meyer von Klinggräff (7 June 1820 in Klein Watkowitz, Stuhm – 3 April 1902 in Paleschken, Stuhm) was a German botanist, who was a specialist in bryophytes.
He was the brother of botanist Carl Julius Meyer von Klinggräff, with whom he often collaborated.
Following graduation, he returned to Croatia, where he botanized in areas along the Adriatic Sea and islands within the Gulf of Quarnero.
During this time period, he collaborated with other botanists, that included Mutius von Tommasini.
In 1852 he acquired an estate in Wiszniewo bei Lobau, Province of Prussia.