The Latina Breast Cancer Screening (LBCS) was developed to measure Latinas’ culturally-shared health beliefs about breast cancer and breast cancer screening. A 60-item LBCS scalewas tested with 288 participantsand reduced to 35 items using principal components analyses. The 35-item LBCS scale and other measures were administered to a second sample of 147 participants to establish the scale’s validity and reliability. A six-factor solution suggested six LBCS sub-scales. The LBCS in its entirety displayed strong internal consistency (α =.93) with adequate estimates of convergent, discriminant, and predictive validity. The LBCS scale appears to be a valid and reliable measure.