Alonso González de Nájera (died 1614) was a Spanish soldier and an advocate of reforms in the conduct of the War of Arauco.
Because of the critical military situation in Chile, Governor Ramon Garcia decided to send González de Nájera to Spain to report to King Philip III on the true state of the territory.
The choice of González was based on his long years of experience and skilled, zealous service to the king in many prominent posts and positions in the army.
He pointed out the weaknesses that the current methods used in the war suffered, especially the system of "campeadas" or incursions that the Hispanic army made in Mapuche territory to burn their fields and to hunt them for slaves.
Although he finished writing it in 1614, it never was published while he was still alive, being printed more than two centuries later in Madrid, in 1866, containing his arguments and proposals and in 1889 in Chile, with a biographical introduction by Jose Toribio Medina.