Hazardia squarrosa is a North American species of shrub in the daisy family known by the common name sawtooth goldenbush. It is native to California in the United States and Baja California in Mexico.
H. squarrosa grows in coastal and inland scrub and chaparral habitats. It a shrub of variable size, from low and clumpy to sprawling over 2 metres (6 ft 7 in) tall. It is covered in thick, sharply toothed leaves a few centimeters long and is generally not very hairy or woolly. It bears numerous flower heads covered in greenish, pointed phyllaries and opening into an array of long yellow to slightly reddish disc florets but no ray florets.