Recombination is an important mechanism for generating genetic diversity in many RNA viruses, either by potentiating advantageous traits or by removing deleterious mutations that have accumulated within a genome. Although recombination has previously been reported in rabbit caliciviruses (lagoviruses) in Europe and Asia, the frequency of emergence of recombinant variants has not been well-defined. The co-circulation of three new lagoviruses, in addition to two endemic rabbit caliciviruses, in wild rabbit populations in Australia within the last four years has established an environment eminently suitable for the emergence and detection of naturally occurring recombinant variants. Two of these new incursions, rabbit haemorrhagic disease virus 2 (GI.2) and RHDVa-Aus (GI.1a-Aus), are themselves recombinant viruses from Europe and China, respectively. Notably, in contrast to GI.1 viruses, GI.2 is not strictly species-specific, infecting several hare species as well as rabbits. Since July 2016, two novel recombinant lagoviruses have been detected in Australia: a variant containing the non-structural genes of GI.1a-Aus and structural genes of GI.2, and another variant comprising the non-structural genes of an endemic benign lagovirus and the structural genes of GI.2. Interestingly, the GI.1a-AusP/GI.2 variant was also detected in a European brown hare in NSW. This suggests that the GI.2 capsid protein is necessary and sufficient for permissivity of hare cells to infection. This recombinant variant appears to be outcompeting the current dominant field strain, GI.2, in some areas. Since the incursions of the parental strains into Australia were known to occur recently, we can conclude that naturally occurring recombination amongst lagoviruses, resulting in the emergence of viable and competitive hybrid variants, occurs frequently, likely combining both antigenic and replicative fitness of the parental viruses. Continued monitoring of circulating lagoviruses in the field is essential to assess the impacts of these novel recombinants on Australian wild lagomorph populations and their ongoing competitiveness.