A sunroom, also known as a solarium, is a room that permits abundant daylight and views of the landscape while sheltering from adverse weather. Sunrooms are generally custom-designed to suit the home to which they are attached, and they can be placed on the side or back of the house. They are typically constructed of transparent tempered glazing atop a brick or wood "knee wall" or framed entirely of wood, aluminum, or PVC, and glazed on all sides. Sunrooms may feature passive solar building design to heat and illuminate them.

Sunrooms are identifiable by their large number of windows, which allow in as much natural lighting as possible. They can be used as sitting rooms where people entertain guests or enjoy reading a book in the comfort of a sunlit area. However, modern sunroom designs are incorporating themes that can turn the room into an activity-based area that reflects the homeowner’s interests. For example, a sunroom can be transformed into a private oasis with a spa, heated flooring, and tropical plants.

It is important to note that the term "sunroom" can also refer to a creator platform that empowers women and non-binary creators to share their content and connect with their communities.