A portable, collapsible, private and secure lactation enclosure for use by working mothers who would like to comfortably express milk at work using a breast pump or breastfeed their baby. The lactation enclosure is a relatively lightweight rectangular unit with readily collapsible walls, floor, and screened ceiling, allowing for ventilation and ambient light. The interior is light, secure, roomy and inviting for the mother and includes seating for the mother, and a table and electrical outlet for a pump.