The positive and negative aspects of breast cancer screening were measured to gain insight into the barriers that prevent Korean women from participating in mammography screening. Breast cancer screening behaviors, attitudes, and barriers were identified from a convenience sample of 328 Korean women recruited in Seoul, Gyeonggi, and Jeju, South Korea. Pros, cons, and decisional balance constructs of the transtheoretical model of behavior change were used to identify stages of change in attitude related to mammography screening. There were significant differences in pros (F = 5.175, p = .001) and cons (F = 3.357, p = .012) across the five stages of change for mammography. Participants indicated that the major barriers to mammography screening were, in order of frequency, the belief that an absence of symptoms meant there was no need for a breast examination, the high cost of breast cancer screening, lack of time, lack of information, embarrassment, fear about x-rays and test results, reliance on breast self-examination (BSE), and discomfort or pain. The benefits of breast cancer screening should be emphasized among Korean women.