Rosemarie Janet Said Zahlan (Arabic: روزماري سعيد زحلان, romanized: Rawzimārī Saʿīd Zaḥlān) (20 August 1937 – 10 May 2006) was a Palestinian-American historian and writer on the Arab states of the Persian Gulf based in London.

Rosemarie Janet Said was born in Cairo, Egypt, in 1937, as the eldest of four sisters.

After Beirut, she went to London to get her PhD (about the Red Sea route to India and its 18th-century history pioneer, George Baldwin) at the School of Oriental and African Studies.

She was also an honorary research fellow at the University of Exeter's Institute of Arab and Islamic Studies.

[3] She married Antoine "Tony" Zahlan, a Palestinian physicist and academic from Haifa.