Challenges arise when variations of the teachers’ awareness on ESD concepts and in the implementation of ESD programs happen. Concerns prevail whenever the teachers are not adequately equipped and prepared in implementing the directives of sustainability in education. Recognizing early childhood teachers’ awareness towards the implementation of ESD in the classroom can help in the formulation of program standards on how to embed ESD concepts in the early childhood years. This way teachers can integrate sustainability concepts in the teaching-learning process in unison. However, review of literature revealed that there is a dearth of information on how ESD programs are being understood and articulated in basic education schools especially in the early childhood setting which creates a blank spot which this study aims to fill in. Hence, this study aims to unveil the ESD in Early Childhood Education Curriculum: Teachers’ Awareness and Implementation.