Chestfeeding is a term used by some parents who identify as transmasculine and non-binary to describe how they feed and nurture their children from their bodies. It is the process of feeding a baby with milk from the chest, regardless of whether the person has had chest/top surgery to alter or remove mammary tissue. Chestfeeding is often used as a way for transgender and nonbinary parents to describe how they feed and nurture their babies after childbirth by feeding them milk from their chest. The term "chestfeeding" is more inclusive than "breastfeeding" or "nursing" because it does not assume a specific gender identity or anatomy.

It is important to note that chestfeeding can be challenging for some individuals, especially those who have had top surgery to remove soft tissue. It is not possible to know how much milk a person will produce and if it will be enough for the baby. In some cases, supplementary feeds may be necessary. Additionally, binding (reducing the appearance of soft tissue by flattening the chest) while chestfeeding may increase the risk of getting an infection called mastitis.

Overall, chestfeeding is a way for individuals who identify as transmasculine and non-binary to feed and nurture their children. It is a gender-inclusive term that recognizes the diversity of families and parenting experiences.