As-Salih Imad ad-Din Abu'l Fida Isma'il, better known as as-Salih Isma'il, (1326–4 August 1345) was the Bahri Mamluk sultan of Egypt between June 1342 and August 1345. He was the fourth son of an-Nasir Muhammad to succeed the latter as sultan. His reign saw a level of political stability return to the sultanate. Under his orders or those close to him, his two predecessors and brothers, al-Ashraf Kujuk and an-Nasir Ahmad, were killed. He was succeeded by another brother, al-Kamil Sha'ban.

Isma'il was born in 1324 or 1325 and was likely named after the Ayyubid emir of Hama at the time, Abu'l Fida Isma'il. The latter was a highly-favored emir of Isma'il's father, the Mamluk sultan an-Nasir Muhammad (r. 1310–1341). Isma'il's mother was a concubine of an-Nasir Muhammad, whose name is not provided by the Mamluk-era sources.

In 1342, Isma'il married a black slave girl named Ittifaq and had a son (unnamed in sources) with her that year. On 11 July 1343, he married a daughter of Emir Baktamur as-Saqi and had a daughter with her. The following year, on 2 January 1344, he married a daughter of Emir Tuquzdamur al-Hamawi.

Following an-Nasir Muhammad's death in 1341, three of his sons inherited the sultanate in succession, although the first two, al-Mansur Abu Bakr and al-Ashraf Kujuk, were sultans in name only while senior Mamluk emirs held the actual reins of power. The third son, an-Nasir Ahmad, came to power in January 1342, but was a highly seclusive leader who ruled from the isolated desert fortress of al-Karak, beginning in May. His refusal to return to Cairo and his alienation of the Egyptian emirs led to his dethronement in June. Isma'il, by then known as "as-Salih Isma'il" was chosen by the leading emirs to replace his half-brother Ahmad. He was 17 at the time of his accession to the sultanate in June, but was already well-known for his piety. Moreover, he made a pact with the leading Mamluk emirs that he would bring no harm to a mamluk, unless he committed an injustice, in return for the emirs' loyalty.

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