Ilarion Buiuc (born 1891, date of death unknown) was a Moldovan deputy elected by the Moldovan Military Congress in the Moldovan Parliament.

He served as Member of the Moldovan Parliament (1917–1918). On March 27, 1918, he voted for the unification of Bessarabia with Romania.

• 
  Moldovan stamp, 1998
• 
  Palace Sfatului Ţării (December 10, 1918)

• Gheorghe E. Cojocaru, Sfatul Țării: itinerar, Civitas, Chişinău, 1998, ISBN 9975-936-20-2
• Mihai Taşcă, Sfatul Țării şi actualele autorităţi locale, "Timpul de dimineaţă", no. 114 (849), June 27, 2008 (page 16)

• Arhiva pentru Sfatul Tarii
• Deputaţii Sfatului Ţării şi Lavrenti Beria