Simsim (Arabic: سمسم), also spelled Semsem or Sumsum, was a Palestinian village, located 15 kilometers (9.3 mi) northeast of Gaza.

They paid a fixed tax rate of 33.3% on a number of crops, including wheat, barley and fruit trees, as well as on goats and beehives; a total of 6,800 Akçe.

[9] During the 17th and 18th centuries, the area of Simsim experienced a significant process of settlement decline due to nomadic pressures on local communities.

[11][12] In A Handbook for Travellers in Syria and Palestine (1858), Josias Leslie Porter describes the village as standing "amidst a little grove of trees, about a 1/4 mile north of the road.

[17] Karl Baedeker and his travelling companions writing in 1894 are more specific, noting that the village is located in an olive grove and that tobacco and sesame are the principal crops grown there.

[25] The Israeli troops returned to Simsim yet again, on 9 or 10 June 1948, again burning houses and skirmishing with Arabs.

[26] Or HaNer, established in 1957, lie less than one km south of the village site, on land formerly belonging to Najd, Gaza.