| 261. | ISMAYEL(Ismayil) | From Hebrew name Išmael "God heard" which came from Bible. The corresponding surname is Ismailyan. |
| 262. | ISPIRIDON | From Greek name Spiridon which means "dear", "darling"(Latin spir "soul"+donum "present"). We also have Ispir for short and the surname Ispiryan. |
| 263. | ISRAYEL | From Hebrew name Israel "God soldier" which came from Bible. The corresponding surname is Israyelyan. |
| 264. | IVANEH(Ivan) | Is the Georgian or New Greek form of the Russian name Iohann or Iohannes. It became popular in XIX c. |
| 265. | JAHAN | From Persian name Jihan "world". Another form of this name is Jahangir, which means "master of world". It is in use since XVc. till now. The corresponding surname is Lahanyan. |
| 266. | JAHANGIR(Jhangir, Jihangir) | Is a Persian name, which came through Turkish in XVII c. The short forms are Jahagir, Jangir, the corresponding surnames are Jahangiryan, Jangiryan. |
| 267. | JALAL | From Arabian name Jalal, which means "greatness", "glory". It is in use since XIII c. It is a rare name now, only the surname Jalalyan is met. |
| 268. | JAMAL | From Arabian name Jamal "beauty". It was spread in XV-XVII c. now it is a rare name only the surname Jamalyan is still met. |
| 269. | JAN | From Persian jan "sweetheart", "soul", "essence". It is in use since XV c. The diminutive form is Jano; the corresponding surnames are Janyan, Janoyan. |
| 270. | JANAN | From Persian janan "lover". It was used till XIX c., now it is a rare name as well as the surname Jananyan. |
