| Ion Cazacliu | |
| Term Start: | 1917 |
| Term End: | 1918 |
| Birth Date: | 1870 |
| Death Date: | 1933 |
| Death Place: | Chişinău |
| Relations: | Grigore Cazacliu (nephew) Vladimir Cazacliu (nephew) |
Ion Cazacliu (born in 1869, Cușelăuca, Șoldănești District, Bessarabia - died in 1933, Chişinău) official, Romanian politician, member of the Moldovan Parliament.
He served as Member of the Moldovan Parliament (1917–1918). The Cazacliu family played an important role in the Great Union; Ion Cazacliu was the uncle of Grigore Cazacliu and Vladimir Cazacliu (the two, Grigore and Vladimir were brothers).