The official language of the Dominican Republic is Spanish. You will find some Spanish-English bilingual locals especially in Santo Domingo and tourist areas. If you speak some Spanish, most Dominicans will try hard to meet you half way and communicate. If you have a problem, you can probably find someone who speaks sufficient English (or probably French and possibly German, Italian or Russian) to help you out. Dominicans are quite friendly and will be quite helpful if you are polite and respectful. Haitians living in the DR may speak Haitian Creole and you may hear a few African and Arawakan words interspersed with the Spanish, especially in rural areas. Communication should not be a problem even for those who speak only a minimum of Spanish. If you are traveling to one of the large all-inclusive hotels, you will have no language problems.