Valeriu Alaci (October 22, 1884–1955) was an Austro-Hungarian-born Romanian mathematician.

Alaci was a native of Cacica, a village in the Duchy of Bukovina. He attended the sciences faculty of the University of Bucharest in the Romanian Old Kingdom, graduating in 1909.^[1]

He died in Timișoara.^[1]

• Emil Satco, Alis Niculică (eds.), Enciclopedia Bucovinei, Vol. I. Suceava: Editura Karl A. Romstorfer, 2018. ISBN 978-606-8698-22-9