| Native Name: | Romanian; Moldavian; Moldovan: Regiunea Ismail |
| Conventional Long Name: | Izmail Oblast |
| Common Name: | Izmail Oblast |
| Subdivision: | Oblast |
| Nation: | the Ukrainian SSR |
| Life Span: | 1940 - 1954 |
| Year Start: | 1940 |
| Date Start: | 7 August |
| Date Event1: | 1 December 1940 |
| Year End: | 1954 |
| Date End: | 15 February |
| P1: | Kingdom of Romania |
| Flag P1: | Flag of Romania.svg |
| S1: | Odesa Oblast |
| Flag S1: | Flag of the Ukrainian Soviet Socialist Republic.svg |
| Image Map Caption: | Map of the Ukrainian SSR oblasts during 1946 - 1954. |
| Capital: | Izmaila |
| Stat Year1: | 1954 |
| Stat Area1: | 12400 |
| Footnotes: | a. The oblast's capital was Akkerman before it was moved to Izmail on 1 December 1940. |
Izmail Oblast (; ro|Regiunea Ismail) (7 August 1940 — 15 February 1954) was an oblast in the Ukrainian SSR, roughly corresponding to the historical region of Budjak. It had a territory of 12400km2.
The oblast was organized on 7 August 1940 on the territory, known as Budjak or southern Bessarabia, occupied by the Soviet Union from Romania. It was originally known as Akkerman Oblast until 1 December 1940, i.e. before the oblast center was moved from Akkerman to Izmail. The oblast was administratively subdivided into 13 raions. On 15 February 1954, the oblast was liquidated, and its territory was included in Odesa Oblast. The current area is now divided into two municipalities (Izmail and Bilhorod-Dnistrovskyi) and nine raions; these cover 13188km2 and in 2015 had a combined population of 592,842.