| Oranje Nassau Mijn IV | |
| Pushpin Map: | Netherlands |
| Pushpin Label: | Oranje Nassau Mijn IV |
| Pushpin Map Caption: | Location in the Netherlands |
| Coordinates: | 50.9164°N 5.9769°W |
| Place: | Heksenberg, Heerlen |
| Subdivision Type: | province |
| State/Province: | Limburg |
| Country: | Netherlands |
| Owner: | Oranje Nassau Mijnen |
| Products: | Coal |
| Amount: | 13,754,000 tons |
The Oranje Nassau IV (located in Heerlerheide, Heerlen), the last and smallest mine exploited by the Oranje Nassau Mijnen, started its life as a ventilation shaft for Oranje Nassau III. In 1910 the construction of a mine shaft was started. However the construction was halted and only reassumed in 1919, the mine became operational in 1927.
Underground, the mine was connect to the Oranje Nassau III and, for safety reasons, also the Staatsmijn Hendrik. In 1966 it became the first of the Oranje Nassau mines to close; though mining activities continued until 1973via Oranje Nassau III.
The mine was deep and produced of coal during its operational period.
The terrain is now used by the Sigrano, a silversand mine, part of .