Government and development agencies enthusiastically promote drip irrigation technology in a bid to save water and improve food security. Yet most farmers stop using drip irrigation technology as soon as the projects ends. This paper assessed factors affecting adoption of drip irrigation technology among smallholder farmers in Arumeru district of Arusha region, northern Tanzania. The study used structured questionnaire and focus group discussion on a randomly obtained sample of 120 smallholders. Results show that female smallholders adopted drip more than their male counterparts. Also, high income and education levels determined adoption of drip irrigation technology in the area. Similarly, smallholders growing multiple crops were less likely to adopt drip irrigation technology than those growing single or few crops. This paper therefore, recommends that more efforts be directed to strengthen women groupings since they have proved to enable them access cutting edge farming technology. Also, improving education levels among smallholders could further improve farmers’ lot in rural areas as increased their chance of adopting technology.