3D Breast Magnetic Resonance Fingerprinting (MRF) allows simultaneous breast tissue T1 and T2 mapping. In this study, same session repeatability of 3D MRF technique in normal breast tissue was evaluated (test/retest 10 minutes apart) and in two consecutive visits. The within subject coefficient of variance (wCV) for two visit scans was < 6% for T1 and < 5% for T2. The wCV for test-retest scan for T1 was <5% and for T2 was 6.5%. One-week repeatability of 3D MRF was good for both T1 and T2 (ICC T1: 0.81 T2: 0.88 at second visit). These variations are smaller than observed inter-subject variability. Thus breast MRF may be useful for longitudinal patient follow-up.