Christensenella is a Gram-negative, non-spore-forming, anaerobic, and nonmotile genus from the family Christensenellaceae. Christensenella minuta, Christensenella timonensis, and Christensenella massiliensis are currently the only known species of Christensenella, all of which were isolated from human stool samples. Development of therapeutic applications for Christensenella is an area of active research. Bacteria of the Christensenellaceae family hold great potential for therapeutic use as live biotherapeutic products to treat obesity and associated metabolic disorders. The larger role of Christensenella in the gut microbiome has also been a focal point for understanding how it may relate to other diseases.