The globalization process and frequent population movements in the last few decades have contributed to the growth of special clinical population in speech-language pathology. This population consists of bilingual clients who, because of their specificity, pose a number of clinical challenges in assessment and therapy planning, as well as in parental counseling. The aim of this master thesis is to contribute to a better insight into the work of speech-language pathologists in Croatia in the context of bilingualism and language impairments through answering the following questions: How substantial is the issue of bilingualism in speech and language pathology? What are linguistic and demographic caracteristics of bilingual clients? What assessment techniques and measures do SLPs use the most while assessing their bilingual clients? What needs are related to improvement of the SLP's work in the context of bilingualism? For the purpose of this study, an online questionnaire has been made, which was answered by hundred SLPs. A descriptive analysis is being presented. Results indicated that the overwhelming majority of the respondents provide services to bilingual clients, mostly to the children who belong to one of the minority groups. Despite the frequency of bilingual clients on their caseloads, SLPs claim that they are not adequately prepared to assess the language status of the person whose language they do not speak. At the same time, a very low percentage of respondents report of being educated about important topics with the regard to bilingualism in speech-language pathology practices such as the choice of adequate assessment measures or knowledge about how to use an interpretor. These shortcomings in education are also reflected in the SLP's practice: a very low percentage of speech therapists confirm the practice of assessing both bilingual client's languages and the use of interpreters. The most commonly used assessment measures are a combination of formal and informal measures and a standardized assessment of Croatian language. The results obtained in this research provide an insight into the needs related to the improvement of SLP's education, which is a precondition for planning the intervention of strengthening the profession for the work in the context of bilingualism.