Mtandao wa Vikundi vya Wakulima Tanzania (MVIWATA) is a national farmers organisation which brings together small holder farmers from all regions of Tanzania in order to have a common voice to defend economic, social, cultural and political interests of smallholder farmers. Literally, MVIWATA is Swahili acronym for the National Network of Small-Scale Farmers Groups in Tanzania.

Founded in 1993 by smallholders themselves, MVIWATA aspires to empower smallholder through capacity strengthening to undertake lobbying and advocacy especially by strengthening their groups and networks, facilitating communication and learning so that they defend their interests. Currently MVIWATA is the largest small-holder farmers grassroot movement in the country with branches in all regions in the mainland and Zanzibar spiralling down to village levels.

The slogan of MVIWATA is ‘Mtetezi wa Mkulima ni Mkulima Mwenyewe’ literally meaning the defender of a farmer is the farmer.