'''芬兰语'''(芬兰语:{{lang|-fi|suomi}},{{audio|Fi-suomi.ogg|發音}}),是[[芬兰]]大部分(87%,2021年底)居民的母语<ref name="ly_bilv">{{cite web | url = http://pxnet2.stat.fi/PXWeb/pxweb/en/StatFin/StatFin__vrm__vaerak/statfin_vaerak_pxt_010.px/?rxid=a16b50be-a334-4b1c-816b-6c43d900d446 | title = Language according to age and sex by region in 1990 to 2016 | language = en | publisher = Statistics Finland | date = 2016-12-31 | accessdate = 2018-02-22 | archive-url = https://web.archive.org/web/20180222225920/http://pxnet2.stat.fi/PXWeb/pxweb/en/StatFin/StatFin__vrm__vaerak/statfin_vaerak_pxt_010.px/?rxid=a16b50be-a334-4b1c-816b-6c43d900d446 | archive-date = 2018-02-22 | dead-url = yes }}</ref>,也被境外芬兰裔侨民所用。它是芬兰的两种[[官方语言]]之一,也是[[瑞典]]的一种法定少数族裔语言。