Title: Cuba
Content:  The official language of Cuba is Spanish and the vast majority of Cubans speak it. Spanish as spoken in Cuba is known as Cuban Spanish and is a form of Caribbean Spanish. Lucumí, a dialect of the West African language Yoruba, is also used as a liturgical language by practitioners of Santería, and so only as a second language. Haitian Creole is the second most spoken language in Cuba, and is spoken by Haitian immigrants and their descendants. Other languages spoken by immigrants include Galician and Corsican.
Title: Demographics of Cuba
Content:  word is the verb ("to fight"). In standard Spanish the verb would be , while fajar exists as a non-reflexive verb related to the hemming of a skirt. The second most spoken language of Cuba is Haitian Creole, used mainly by Haitian immigrants and its descendants going back since the late 18th century, of whom fled the Haitian Revolution. Other languages of Cuba are Cuban Sign Language, and English is commonly studied as a foreign language. There are also reports of Lucumi, "Lengua Conga" (Kongo-based liturgical language of the Palo religion) and Bozal Spanish (an "African" socio-dialect of Spanish; now used only in folk religion). Historically, the Ciboney and Classic dialects of Taino and the unattested Guanahatabey were spoken.
Title: Culture of Cuba
Content:  As a former colony of Spain, Cuba uses the Spanish language. After the Cuban Revolution, the term compañero/compañera, meaning "comrade", came to gradually replace the traditional señor/señora as the universal polite title of address for strangers. A significant number of Afro-Cubans as well as biracial Cubans speak Haitian Creole. Haitian Creole is the second-most spoken language as well as a recognized one in Cuba, with approximately 300,000 speakers - about 4% of the population. (Haiti was a French colony - Saint-Domingue - from the early 17th century, and the final years of the 1791&ndash;1804 Haitian Revolution brought a wave of French settlers fleeing with their Haitian slaves to Cuba.) Many words from Cuban Amerindian languages have entered common usage in both Spanish and English, such as the Taíno words canoa, tobacco and huracán. Some of the place names are Indian, such as Guanabacoa and Guanajay. English is often used in big cities.
Title: Demographics of Cuba
Content:  Spanish is the official language of Cuba. Of all the regional variations of Spanish, Cuban Spanish is most similar to, and originates largely from, the dialect spoken in the Canary Islands. This is a consequence of Canarian migration, which in the 19th and early 20th century was heavy and continuous. There were also migrations of Galicians and Asturians as well, but they did not impact Cuban Spanish to the same degree. Much of the typical Cuban replacements for standard Spanish vocabulary stems from Canarian lexicon. For example, ' (bus) differs from standard Spanish ' the former originated in the Canaries and is an onomatopoeia stemming from the sound of a Klaxon horn (wah-wah!). An example of Canarian usage for a 
Title: Cuban Spanish
Content:  Cuban Spanish is the variety of the Spanish language as it is spoken in Cuba. As a Caribbean language variety, Cuban Spanish shares a number of features with nearby varieties, including coda deletion, seseo, and debuccalization ("aspiration").
Title: Cuban Americans
Content:  Similar to the 67% of other Latinos, 69% of Cubans under 18 speak a language other than English at home. For Cubans over the age of 18, the percent speaking a language other than English at home climbs to 89%, which is higher than the 80% among other Latino groups. Only 12% of Cubans under the age of 18 speak English less than very well, which is much lower than the 20% among other Latino groups.
Title: Cuba–Haiti relations
Content:  Haitian Cubans number 300,000 in Cuba, with Haitian Creole being the second most spoken language in the country. Many have arrived in recent years due to natural disasters in Haiti.
Title: Haitian Creole
Content:  Haitian Creole is the second most spoken language in Cuba after Spanish, where over 300,000 Haitian immigrants speak it. It is recognized as a minority language in Cuba and a considerable number of Cubans speak it fluently. Most of these speakers have never been to Haiti and do not possess Haitian ancestry, but merely learned it in their communities. In addition, there is a Haitian Creole radio station operating in Havana.
Title: Afro-Cubans
Content:  fields cutting cane. Their living and working conditions were not much better than slavery. Although they planned to return to Haiti, most stayed on in Cuba. For years, many Haitians and their descendants in Cuba did not identify themselves as such or speak Creole. In the eastern part of the island, many Haitians suffered discrimination. After Spanish, Creole is the second most-spoken language in Cuba. Besides the eastern provinces, there are communities in Ciego de Ávila and Camagüey provinces where the population maintains Creole as a first language. Classes in Creole are offered in Guantanamo, Matanzas and the City of Havana. There is a Creole-language radio program.
Title: Greater Antilles
Content:  Languages spoken in the Greater Antilles are mostly colonial languages, along with some Creole influence. Spanish is the main language in Cuba, the Dominican Republic and Puerto Rico. Haiti has a Creole language, Haitian Creole, as one of its official languages, alongside French. English is the main language in Jamaica and the Cayman Islands, though it is also an official language of Puerto Rico, where it is spoken as a second language. In Jamaica, a Creole language is spoken but carries no official recognition.

Question: what language does cuba speak?
Answer: Spanish Language.