Mae Mentrau Iaith yn hybu a hyrwyddo defnydd y Gymraeg mewn cymunedau ar draws Cymru. Sefydlwyd y Fenter Iaith gyntaf yn 1991, ac erbyn hyn mae 22 ohonynt yn gwasanaethu pob rhan o Gymru. Mae pob Menter Iaith wedi tyfu o awydd a dyheadau pobl leol i gael defnyddio’r Gymraeg ymhob agwedd ar fywyd yn eu cymunedau. The aim of the Mentrau Iaith is to increase the use of the Welsh language in communities across Wales. The first Menter Iaith founded was in 1991, and now there are 22 of them working in all parts of Wales. All of the Menter Iaith have come into being because of the desire of local people to be able to use the Welsh language in all aspects of life in their communities.