Cryptosporidium is a leading global cause of diarrhoea with many reported outbreaks related to water and zoonotic transmission. This study summarizes data from Public Health Surveillance reports since 2010 in New Zealand to describe exposures associated with human diarrhoea outbreaks caused by Cryptosporidium. We also investigate the species and subtypes of cases involved in outbreaks to elucidate transmission routes and the predominant aetiological agents of cryptosporidiosis. For the period 2010-2017, 318 cryptosporidiosis outbreaks were reported in New Zealand resulting in 1,634 cases and 20 hospitalisations. The most important mode of transmission was person-to-person (primary infections and secondary or close contacts infections), relating to 260 outbreaks and 1,320 cases, followed by 113 outbreaks associated with animals, resulting in 436 human cases. From 2018 to 2021 there were 37 cryptosporidiosis outbreaks associated with 324 cases. We identified the subtypes by using PCR targeting the gp60 gene and the likelihood of mixed infections with the TIDE algorithm. Subtype families Ib and Ig of C. hominis and IIa and IId of C. parvum were found among cases, however, C. hominis subtypes occurred in eight of the 11 outbreaks reviewed where molecular data was available. Examination of the chromatograms showed no mixed infections in the samples assessed. To better understand the epidemiology, sources, transmission and extent of cryptosporidiosis outbreaks in New Zealand, subtyping data needs to be routinely incorporated into national surveillance programmes. Our study highlights the value of integrating epidemiology information and molecular typing to investigate and manage clusters of cryptosporidiosis cases.