The cross cultural equivalence of child (n′=′217) and parent (n′=′283) versions of the revised children's manifest anxiety scale (RCMAS), multidimensional anxiety scale for children (MASC), and the fear survey schedule for children—revised (FSSC-R) was examined in Mexican youth in Mexico, and Hispanic and white European American youth in the USA. The RCMAS, MASC, and FSSC-R showed cross ethnic measurement equivalence. The Mexican and Hispanic youth reported more worries, and the Mexican youth reported more somatic symptoms than the European American youth. Per mother report, Mexican and Hispanic youth express more somatic symptoms than European American youth who also show the least number of fears of the unknown and fears of danger and death. The results support the validity of commonly used child anxiety measures with these populations and accrue evidence for greater anxiety and fear expression by Hispanic and Mexican youth in certain domains.