Background Uterine anomalies occur because of Müllerian duct maldevelopment. Few of them are associated with adverse obstetric outcome (Reyes-Muñoz et al. in Diagnostics. 2019;9:4. https://doi.org/10.3390/diagnostics9040149). Genital outflow tract obstructive uterine anomalies invariably present in the adolescent age group. Case details We report a case series of uterine anomalies. Ten such cases presented like a “cluster” within a short span of just one month. Eight of these ten cases were diagnosed intraoperatively during cesarean section. One case was diagnosed during laparoscopic sterilization, and the other case was diagnosed before doing manual vacuum aspiration. There were four cases of bicornuate uterus, two cases each of unicornuate uterus and uterine didelphys, and one case each of septate uterus and arcuate uterus. All eight babies were healthy and without any obvious congenital anomalies. To the best of the authors’ knowledge, literature regarding these anomalies has been mentioned mostly as case reports (Bruand et al. in Cureus. 2020;12:3. https://doi.org/10.7759/cureus.7191) and a few case series (Ross et al. in BMJ Case Rep. 2018. https://doi.org/10.1136/bcr-2017-221815). All women were of Kannadiga ethnicity and in the age range of 19–35 years. They were from places nearby to our institute within a range of approximately 250 km. Conclusion We describe herein almost all types of uterine anomalies. These rare uterine anomalies presented in a short span of just four weeks like a “cluster”. This incidental finding is unusual. We need to design studies to understand the reasons for clustering of such cases in our clinical practice.