Coparenting refers to the relationship that parents (or parent figures) share in the raising of children. Although most parenting partnerships operate between a child’s biological parents there are many variations – such as single parents and their supports, and those that develop in blended families. Coparenting research studies relations between the strength of the parenting partnership and both child and parent outcomes while also exploring how this relationship forms and can be influenced. Research across the world has now found important links between the strength of parenting partnerships and children’s social and emotional development, parenting stress, parenting satisfaction and the strength of parents’ romantic relationships. Intervention studies have also found that the quality of parenting partnerships can be influenced. The F&FRT is exploring alternative ways to measure the strength of parenting partnerships, developing resources to support organisations to support and strengthen parenting partnerships, and developing a variety of interventions that can support parents to sustain and develop strong coparenting relations.