| father | ojciec |
| mother | matka |
| stepfather | ojczym |
| stepmother | macocha |
| son | syn |
| daughter | córka |
| descendant, offspring | potomek, latorośl |
| stepson | pasierb |
| stepdaughter | pasierbica |
| brother | brat |
| sister | siostra |
| half-brother | brat przyrodni |
| half-sister | siostra przyrodnia |
| twin brother | brat bliźniak |
| twin sister | siostra bliźniaczka |
| uncle | wujek |
| aunt | ciocia |
| nephew | siostrzeniec, bratanek |
| niece | siostrzenica, bratanica |
| cousin | kuzyn, kuzynka |
| grandfather | dziadek |
| grandmother | babcia |
| great-grandfather | pradziadek |
| great-grandmother | prababcia |
| grandson | wnuk |
| granddaughter | wnuczka |
| father-in-law | teść |
| mother-in-law | teściowa |
| son-in-law | zięć |
| daughter-in-law | synowa |
| brother-in-law | szwagier |
| sister-in-law | szwagierka |
