The Welsh in Iowa is, as the title indicates, a history of the Welsh in Iowa. This dissertation seeks to not only document the Welsh immigrants who lived in Iowa during the nineteenth and early twentieth centuries, but to study the Welsh as a distinct ethnic group in a state known for its ethnic heritage. As told in this study, the story of the Welsh in Iowa begins in Wales, where the Welsh ethnic identity developed in response to English domination. The story continues with an account of factors in emigration from Wales and the three main waves of Welsh immigration to America. A short history of the Welsh in America follows the section on immigration. Then a brief history of the state of Iowa is given, including a survey of the state's major ethnic groups. The actual history of the Welsh in Iowa is divided into two sections, first the agricultural communities and then the coal mining communities. An additional chapter containing demographic analyses is also included. The conclusion is followed by two appendices giving brief accounts of each Welsh community in Iowa.