International social unrest in recent years has resulted in many people choosing or being forced to leave their home countries to seek better lives elsewhere, causing drastic demographic shifts. Yet, it has been pointed out that institutional policies and practices in many countries have not caught up with such changing demographics, which have contributed to concerns highlighted via the notion of 'superdiversity' (Vertovec, 2007). Due to the large influx of migrants over the past few decades, New Zealand and its early childhood education settings have become increasingly ethnically and linguistically diverse. The country is now being described as a 'superdiverse New Zealand' and is facing challenges emerging from 'a level of cultural complexity surpassing anything previously experienced' (Royal Society of New Zealand, 2013: 1). Furthermore, population projections (Statistics New Zealand, 2015) indicate that superdiversity will be a long-term phenomenon in New Zealand. Te Whariki, the New Zealand early childhood curriculum, embraces diversity, recognising that the country 'is increasingly multicultural' (Ministry of Education, 2017: 1). In light of these concerns, this article considers the frameworks of superdiversity and critical multiculturalism with regard to transforming and developing policies and pedagogies that support working with superdiverse migrant children and their families by responding to migration-related equity and inclusion issues. This discussion has implications and relevance for both present and future early childhood education settings in New Zealand and in other countries with a large population of migrants.