The Defense Institute (in Portuguese: "Instituto Defesa") is a non-governmental, nonprofit organization in Brazil created in 2013,[1] with the main objective of guaranteeing citizens the inalienable right to keep and bear arms.

The Defense Institute was created in response to the government's failure to comply with the popular will expressed in the result of the 2005 referendum, which rejected the proposal to restrict access to the right to keep and bear arms.

[2] In 2016, the Defense Institute, in partnership with the IMBEL ("Brazilian Military Material Industry"), started producing videos of that company's guns.

[5] The Defense Institute has been promoting and conducting training courses and events related to the subject of self-defense.

[6] The Defense Institute has also been promoting political actions and has been advocating since 2011 the commercialization of firearms without barriers imposed by the State.