Stasys Šimkus (1887 m. vasario 4 d. Motiškiuose, Seredžiaus valsčius, Rusijos imperija – 1943 m. spalio 15 d. Kaune) – kompozitorius, chorų organizatorius ir dirigentas, muzikos publicistas, folkloristas, pedagogas ir muzikos visuomenininkas.
Stasys Šimkus was a Lithuanian composer. Šimkus studied in Vilnius and Warsaw and later became the pupil of Anatoly Konstantinovich Lyadov, Jāzeps Vītols, and Maximilian Steinberg. After visiting the United States, he went to Leipzig for further studies with Paul Graener and Sigfrid Karg-Elert.