Martha Luz Hildebrandt Pérez-Treviño (Spanish pronunciation: [ˌmaɾ.ð̞a ˌlus il̪.d̪eˌβ̞ɾãn̪d̪ð̞ ˌpe.ɾes t̪ɾeˈβ̞i.ɲo]; 13 January 1925 – 8 December 2022) was a Peruvian linguist and Fujimorist politician.

When the general elections of 2000 approached and Alberto Fujimori sought re-election, she defended the controversial project, along with Martha Chávez, Luz Salgado and Carmen Lozada.

[4][This quote needs a citation] She was replaced by First Vice-president Luz Salgado, and then – after two disputed elections between government supporters and opposition – Valentín Paniagua Corazao (Accion Popular) was chosen temporarily as the new President of Congress and therefore became the Transitional President of the Republic after Fujimori's resignation.

In the 2011 general election, she lost her seat when she ran for re-election under the Fuerza 2011 party, marking the end of her political career.

In August 2006, Hildebrandt criticized two congresswomen from Cusco, Hilaria Supa and María Sumire, for being sworn in before Congress in their native language Quechua on 25 July 2006.