The change, expected this autumn, follows other moves by the NY Times to consolidate its image, including plans to sell off the Boston Globe announced this month. It will bring to an end the 40-year-old IHT brand familiar to US expatriate readers.
Chief executive Mark Thompson, previously director general of the BBC, said the paper would add new reporters, and aim to expand its overseas readership.
The NY Times has wholly owned the IHT since 2003, when it bought out the 50 percent owned by its rival, the Washington Post. The IHT already shares a common online platform with the NY Times, and about ten percent of the business's 640,000 digital subscribers are located outside the US.