Stuttering is a speech disorder characterized by repetitions, prolongations, interjections, hesitations and blocks. The prevalence rate of persons who stutter in the World is 1%. Kenya has an estimated 440, 000 persons who stutter, out of which 16,606 live in Kakamega county. Results from a baseline survey carried out in counties in Wesstern Kenya Region between 2010 and 2013 to find out the distribution of Learners Who Stutter (LWS) indicated that; Kakamega had 138, Vihiga 84, Bungoma 33, and Busia 10. In Kakamega county these learners were enrolled in 20 schools. The same survey showed that LWS are getting less than 250 marks out of possible 500 marks. Research has shown that this low performance is due to stuttering effects such as anxiety, stigma, fear, frustrations and embarrassment to the LWS while speaking. However, the influence of these stuttering effects on social interaction among learners are unknown. The purpose of study was to determine the influence of stuttering effects on social interactions among LWS. Objective of study were to; establish the status of social interactions among LWS and determine influence of stuttering effects on social interactions among LWS. The study employed descriptive survey and correlation research designs. The target population consisted of 84 LWS, 2301 regular learners in class six, seven and eight; 120 teachers and 20 head teachers. Stratified random sampling was used to select 329 regular learners, while saturated sampling was used to select 76 LWS, 108 teachers and 18 head teachers. Data was collected using questionnaire, interview schedule, and observation guide. Face and content validity of instruments was established. Reliability of instruments was established through test-retest method on 10% of study population using Pearson correlation; reliability was accepted at 0.7 and above. Quantitative data was analyzed and presented in percentages and means. Multiple regressions were used to find out effects of stuttering on social interactions among LWS. Qualitative data was transcribed, analyzed and reported in emergent themes and sub-themes. The findings of the study indicated that Effects of stuttering explained 57.8% (R 2 Change= .578) p<.05 negative variance in social interactions among LWS. The finding further indicated that LWS had difficulties in social interactions due to effects of stuttering and this may explain their poor performance in class if they cannot interact easily with their peers and teachers. In conclusion, the effects of stuttering negatively influenced social interactions among LWS. Keywords: effects of stuttering, social interactions, learners who stutter. BACKGROUNDSocial interaction is the ability of two or more people to communicate or acknowledge one another and form relationships. It is important in the formation of relationships, interaction, influencing social roles, status and fostering the wellbeing of one another in the society. Davis, Howell and Cooke [1] carried out a study to establish the socio-dynamic relationships bet...