This article proposes a discussion of the concepts of ideology, knowledge-power, government, discourse and regimes of truth in the work of Foucault, drawing parallels and establishing the theoretical differences between his analytical proposal and that of Louis Althusser, with regard to the latter’s conceptualization of ideology. The aim is to argue for the existence of a theoretical alignment between the two authors, to the extent that the conceptions of knowledge-power and ideology, in both, correspond to ideas of a positive discursive construction of a regime of truth, instead of what the classical Marxist doctrine would understand as distortion or alienation.O presente artigo propõe a discussão dos conceitos de ideologia, saber-poder, g...