Documented chromosome counts are reported for the first time for nine Kunzea species and two varieties. Confirmatory counts are provided for K. sinclairii. Counts are also documented for a further nine unnamed variants of the Australasian K. ericoides complex. In addition, counts and chromosome-pairing behaviour are reported for eight putative wild New Zealand Kunzea hybrids, including one example of ×Kunzspermum hirakimata, and artificial hybrids from 21 controlled crosses (18 Kunzea and two controlled Kunzea × Leptospermum). Some chromosomal variation is evident in the New Zealand members of the K. ericoides complex, which helps to support the recognition of additional taxa within this aggregate species.