abstract: In the study of politeness in Spanish there are some speech acts that have received more attention, such as requests, apologies, invitations and negotiations. In the case of the of congratulation, there is only one published work by García about congratulation by Peruvian Spanish-speakers. This thesis is a first approximation to the study of realization of the speech act of congratulation in Colombian Spanish. The Brown and Levinson model is used for the study of preferences in the strategies of politeness, and the Scollon and Scollon model for the notion of deferential and solidarity politeness. The Blum Kulka et al. model is used for the classification of the categories of principal head acts and supportive moves in the speech acts of congratulation. The following results were found in answer to the basic hypothesis of the research: The Colombians in this sample have positive politeness when giving congratulations and manifest it with such solidarity strategies as pride and approval, expressions of gratitude and support, and they also give the congratulation in an explicit manner. To a lesser degree they request information and make direct criticism. The data analysis shows a 95% certainty in the differences found between men and women. Nevertheless, the differences between younger and older people or between young women and young men are not statistically significant and only show tendencies. In order to corroborate the finding of this research, it is necessary to have a larger sample in terms of the educational level of the participants. Also, the sample should be broader in terms of gender and age, so as to verify if the difference between younger and older people continues being a tendency or if there is a statistically significant difference. To generalize the term Colombian, other regions of the country should be included, especially the contrast between the Andean, Coastal, and Plains regions which are culturally different within the country. / Dissertation/Thesis / M.A. Spanish 2011