| Hipolit | | hee-PAW-leet | Polish | |
| Honorata | | haw-naw-RAH-tah (Polish) | Late Roman, Polish | |
| Hubert | | HYOO-bərt (English), HOO-bert (German), HUY-bərt (Dutch), uy-BER (French), HUW-bert (Polish) | English, German, Dutch, French, Polish, Ancient Germanic | |
| Iga | | - | Polish | |
| Ignacja | | - | Polish | |
| Ignacy | | eeg-NAH-tsi | Polish | |
| Igor | | EE-gər (Russian), EE-gawr (Polish) | Russian, Polish, Slovene, Croatian, Serbian, Macedonian | |
| Ilona | | EE-lo-naw (Hungarian), ee-LO-nah (German), EE-lo-nah (Finnish) | Hungarian, German, Finnish, Latvian, Lithuanian, Polish, Czech | |
| Irena | | ee-RE-nah (Polish), ee-RAY-nah (Dutch) | Polish, Czech, Slovene, Croatian, Serbian, Dutch, Lithuanian | |
| Ireneusz | | ee-re-NE-uwsh | Polish | |
| Irenka | | ee-REN-kah (Polish) | Polish, Czech | |
| Iwan | | EE-wan (Welsh), EE-vahn (Polish) | Welsh, Polish | |
| Iwo | | EE-vaw | Polish | |
| Iwona | | ee-VAW-nah | Polish | |
| Iza | | - | Polish | |