The present invention provides antibodies that bind to human interleukin-25 (IL-25) and methods of using the same. According to certain embodiments, the antibodies of the invention bind human IL-25 with high affinity. In certain embodiments, the invention includes antibodies that bind human IL-25 and block IL-25-mediated cell signaling. The antibodies of the invention may be fully human, non-naturally occurring antibodies. The antibodies of the invention are useful for the treatment of various disorders associated with IL-25 activity or expression, including asthma, allergy, chronic obstructive pulmonary disease (COPD), inflammatory bowel disease (IBD), including ulcerative colitis and Crohn's disease, atopic dermatitis (AD), and Eosinophilic Granulomatosis with Polyangiitis (EGPA), also know as Churg-Strauss Syndrome.