The study sought to investigate the effect of small-scale dairy farming in enhancing sustainable food security for farmers and their households in Murang’a East Sub-County, Murang’a County. The paper applied descriptive research design and quantitative research technique for the methodology. Besides, the investigation used a sample size computed from a populace size of small-scale dairy farmers in Gaturi, Township and Mbiri Wards (lower Kiharu Constituency), Murang’a East Sub-County, approximated to be 45,000 Km2. The sample size comprised of 385 respondents selected through stratified sampling aiming at the equal representation of the three wards. Out of the selected 385 individuals, only 297 respondents were effective participants in the study. The rest did not give feedback or were nonresponsive. The data analysis used descriptive statistics through the Microsoft Excel data analysis tools to develop distribution tables, frequencies, percentages, charts, and measures of central tendency. Data collection instruments included questionnaires, interviews and observation. The study also conducted a pre-test and analysis to ensure validity, accuracy, and reliability of instruments applied. Data collection process involved getting permits and necessary approvals. The study concluded that the study concludes that small-scale dairy farming has an effect in multiple ways on food security within the county. The effect is the provision of milk to the farmers for consumption as food. The study recommends that county government should invest in research activities that would enhance dairy farming practices. Such research activities may include those on the market, diseases, animal feeds, and value addition to dairy produce.