Colby's Army is a Tennessee-based nonprofit founded in loving memory of Colby Keegan. Its mission is to help people facing life challenges through outreach and meaningful interactions with animals and nature. The organization offers therapeutic riding and other equine-assisted activities, giving participants opportunities to learn and engage with horses. It also provides equine-assisted team-building programs.

Colby's Army supports people experiencing homelessness through outreach intended to restore dignity and help individuals get back on their feet. Its job-training program recognizes the importance of meaningful workplace participation for people with special needs and other life challenges. In its organic garden, participants learn about food, nature, and healthy living.

The organization also shares a free pet directive, a legal document outlining care and custody arrangements for pets when an owner is temporarily or long-term unable to care for them, along with resources to help keep animals safe and comfortable. Colby's Army welcomes volunteers and donations, and invites community members to take part in its programs and events.