Cognitive development was a developmental aspect that was emerged and thrived when the preschool years because 50% of the potential cognitive formed in the first 4 years of life. Cognitive development related to increasing the quality of human resource. The objective of the study was to know dominant factor associated with cognitive development early childhood. The design study was quantitative using cross-sectional study. Sample study were 128 early childhood 24-72 and collected information on April 2013 inTalagamulya Village, Karawang district. Cognitive development as dependent variable, was gathered using questionnaire. Independent variables were children’s characteristics (birth weight, nutrition status/height for age, intake of energy, protein, fe, zinc, vitamin A), mother’s characteristics (age, education, job, knowledge), and participation in early childhood education. The logistic regression was used for analyze data. The results of this study showed early childhood with good cognitive 61.7%. Chi square analysis showed intake of vitamin A, zinc intake, maternal knowledge, and follow early childhood education significant associated with cognitive development. The dominant factor associated with cognitive development was the participation in early childhood education.