A ferrite sintered magnet includes a composition expressed by a formula (1) of Ca1-w-xLawAxFezComO19. In the formula (1), “w”, “x”, “z”, and “m” satisfy a formula (2) of 0.30≤w≤0.50, a formula (3) of 0.08≤x≤0.20, a formula (4) of 8.55≤z≤10.00, and a formula (5) of 0.20≤m≤0.40. In the formula (1), “A” is at least one kind of element selected from a group consisting of Sr and Ba. Cr is further contained at 0.058 mass % to 0.132 mass % in terms of Cr2O3.