| English | Finnish |
| father | isä |
| mother | äiti |
| son | poika |
| daughter | tytär |
| grandfather | isoisä |
| grandmother | isoäiti |
| uncle (father's brother) | setä |
| uncle (mother's brother) | eno |
| aunt | täti |
| cousin | serkku |
| granddaughter (son's daughter) | pojantytär |
| granddaughter (daughter's daughter) | tyttärentytär |
| great-granddaughter (son's son's daughter) | pojanpojantytär |
| great-granddaughter (daughter's son's daughter) | tyttärenpojantytär |
| great-granddaughter (son's daughter's daughter) | pojantyttärentytär |
| great-granddaughter (daughter's daughter's daughter) | tyttärentyttärentytär |
| grandson (son's son) | pojanpoika |
| grandson (daughter's son) | tyttärenpoika |
| great-grandson (son's son's son) | pojanpojanpoika |
| great-grandson (daughter's son's son) | tyttärenpojanpoika |
| great-granddaughter (son's daughter's son) | pojantyttärenpoika |
| great-granddaughter (daughter's daughter's son) | tyttärentyttärenpoika |
| niece (brother's daughter) | veljentytär |
| niece (sister's daughter) | sisarentytär |
| nephew (brother's son) | veljenpoika |
| nephew (sister's son) | sisarenpoika |
| sister | sisko
sisar |
| brother | veli |
| sister-in-law (from the wife's perspective; her brother's wife or her husband's sisters) | käly |
| sister-in-law (from the wife's perspective; her husband's brother's wife) | nato |
| brother-in-law | lanko |
| daughter-in-law | miniä |
| son-in-law | vävy |
| (immediate) family | perhe |
| (extended) family | suku |
| parents | vanhemmat |
| grandparents | isovanhemmat |
| single mother | yksinhuoltajaäiti
yh-äiti |
| single father | yksinhuoltajaisä
yh-isä |
| nuclear family | ydinperhe |
| ### | uusperhe |
| family that doesn't have one male and one female as the parents | sateenkaariperhe |
| husband | mies
aviomies |
| common-law husband | avomies |
| wife | vaimo
aviovaimo |
| common-law wife | avovaimo |
| spouse | puoliso |
| stepson | poikapuoli |
| stepmother | äitipuoli |
| stepfather | isäpuoli |
| stepdaughter | tytärpuoli |
| stepsister | sisarpuoli |
| stepbrother | velipuoli |
| the youngest child | kuopus |
| the oldest child | esikoinen |
| dad | faija (dial. Helsinki)
iskä isi issee (dial. Ostro) |
| mom | mutsi (dial. Helsinki)
äiskä äitee (dial. Ostro) äiree (dial. Ostro) |
| grandma | famma
mummo mummi ahku (dial. Northern) mumma (dial. Ostro) nanna |
| grandpa | ukki
äijä pappa paapa paappa (dial. Ostro) |
| bro(ther) | broidi (dial. Helsinki) |
| sister | systeri (dial. Helsinki) |
NB. Many of the words for in-laws have fallen out of use in the more urban areas, but are in use, at least to some degree, in the rest of the country.