Tanzania Early Childhood Development Network (TECDEN) is a national umbrella network of Early Childhood Development (ECD) Civil Society Organizations working in partnership to promote early childhood development in Tanzania. 

TECDEN envision a society where all children are developmentally on to reach their full potential. TECDEN is determined to work collaboratively with other networks, coalitions, institution, the private sector, the government, development partners and other potential stakeholders to influence policies, programs and practices related to early Childhood Development. This can be achieved through sharing of information, experience and generating knowledge; and work towards early investments in young children of 0-8 years in Tanzania. 

TECDEN was found in December 2000. It was formally registered on 30th June 2004 with registration NO:00NGO/00007826 by the Registrar of Societies, Ministry of Home Affairs under the societies' ordinance, 1954 and re- registered in 2015 and 2023 consecutively under NGO Act with registration NO:00NGO/R1/00178. The re-registration aimed to position the Network to operate within existing ECD landscape in the country. Among the objectives one is “…to develop and maintain an active ECD network through strong institutional links between ECD related organizations”. What started out as the inter Organizational Committee naturally developed into the formation of the national network of ECD stakeholders now known as TECDEN.