| Sidi Salem | |
| Native Name: | سيدي سالم |
| Native Name Lang: | ar |
| Settlement Type: | City |
| Pushpin Map: | Egypt |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Egypt |
| Coordinates: | 31.2724°N 30.7808°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Egypt |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Kafr El Sheikh |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Timezone1: | EST |
| Utc Offset1: | +2 |
Sidi Salem (Arabic: سيدي سالم) is a city in the Kafr El Sheikh Governorate, Egypt.[1]
The medieval Arabic and Coptic scholars identified the city with ancient Phragonis,[2] although the archeological findings point out to Kom al-Khawaled 7 kilometers east of Sidi Salem.[3]
Valentinus, an early Gnostic Christian theologian and founder of the Valentinianism, was believed to be native to Phragonis.[4]