Constantin G. Stere or Constantin Sterea (Romanian; Russian: Константин Егорович Стере, Konstantin Yegorovich Stere or Константин Георгиевич Стере, Konstantin Georgiyevich Stere; also known under his pen name Șărcăleanu; June 1, 1865 – June 26, 1936) was a Romanian writer, jurist, politician, ideologue of the Poporanist trend, and, in March 1906, co-founder (together with Garabet Ibrăileanu and Paul Bujor — the latter was afterwards replaced by the physician Ioan Cantacuzino) of the literary magazine Viața Românească. One of the central figures of the Bessarabian intelligentsia at the time, Stere was a key actor during the Union of Bessarabia with Romania in 1918, and is associated with its legacy.

Constantin Stere was professor of Administrative and Constitutional law at the University of Iaşi, serving as its rector between 1913 and 1916. He is also remembered for his partly autobiographical novel În preajma revoluției (literal translation: "On the Eve of the Revolution" — in reference to the Russian Revolution of 1917).