Tostan (ma'ana "nasara" a cikin Wolof ) rajista ce ta Amurka mai lamba 501 (c) (3) ta kasa da kasa mai hedikwata a Dakar, Senegal . Manufar kungiyar ita ce "karfafawa al'ummomi cigaba da cimma burinsu na nan gaba da kuma karfafa gungun manyan kungiyoyi da ke haifar da martaba ga kowa" a kasashen Afirka ta Yamma da dama, da suka hada da Senegal, Guinea, Guinea-Bissau, Gambiya, Mali, da Mauritaniya . Tostan ta dauki cikakkiyar hanya, hadaddiyar hanya ta ci gaba ta hanyar sauƙaƙa shirye-shiryen haƙƙin ɗan adam, shirye-shiryen ilimi ba na yau da kullun ba, galibi Shirin al'umma (CEP), wanda ke nufin tallafawa da ƙarfafa mahalarta da al'ummomi don jagorancin ci gaban su. kungiyarr tana ɗaukar sama da mutane 500 aiki kuma tana aiki don haɓakawa da haɓaka haɗin kan al'umma a cikin ayyukan da suka shafi karatu da rubutu, kiwon lafiya da tsafta, jin daɗin yara, haƙƙin ɗan adam da dimokiradiyya, ɗorewar muhalli, da ƙarfafa tattalin arziƙi.