Adolescent pregnancy is a global concern and worldwide. Approximately 16 million girls aged 15-19 and 2 million girls under 15 years become pregnant annually (UNFPA 2015). Globally adolescent pregnancy is likely to be high in marginalized communities that are poverty stricken and with low education levels as well as low employment opportunities. The highest adolescent birth rates are seen in sub-Saharan Africa, Latin America and the Caribbean at 104 and 63 births per 1,000 adolescent girls, respectively. In Kenya, adolescents (10-19 years) make up 22% of the population. It has been reported that 18% of girls aged 15- 19 years in Kenya are already mothers or are pregnant with their first child. Wajir East has a youthful population with young persons aged below 25 years constituting 42%. The intervention strategies focus on creating a social movement that is empowering, engaging young people meaningfully, improving access to information and services, and supporting education and economic empowerment for young women. The age specific fertility rate for girls aged 15-19 years for Wajir East is 118 births per 1000 girls which is higher than the national level. Although interventions have been introduced to mitigate this social problem, more needs to be done to reduce the number of teenage pregnancies which still have a significant burden in our societies. This study therefore aims to identify significant factors contributing to high prevalence of teenage pregnancy in Wajir East, Kenya. The specific objectives of this study will be; to identify socio-economic factors, individual characteristics and the socio-cultural factors contributing to high prevalence of teenage pregnancy in Wagberi ward, Wajir East. Descriptive research design will be adopted in this study. The study will target teenage girls with age bracket of 10-18 years who have had a teenage pregnancy and not married and married. Wagberi ward will be purposively selected. Simple random selection will be utilized to select the desired respondents. The sample size for this study will be determined according to Fink (2001) and Sarantokos (1998) formula where a sample of59 teenage girls will be selected. The semi-structured questionnaire will be the primary tool for data collection. The information gathered from the questionnaires will be checked for accuracy, consistency, and completeness first. The data will then be organized to make coding and analysis easier. SPSS will be used to evaluate the data because of its speed and ease of use in analyzing the data acquired, as well as its accessibility. To summarize data, descriptive statistics such as percentages will be employed. Graphs, tables, and pie charts will be used to present the data collected.