The rectovesical pouch is the pocket that lies between the rectum and the bladder in males in humans and other mammals.

When a man is upright or supine, it is the lowest part of his peritoneal cavity.

[3] It may contain parts of the ileum (lower small intestine) and the sigmoid colon.

After a hysterectomy in women, the remaining peritoneum may be referred to as a rectovesical pouch.

[4] When a man is upright or supine, the rectovesical pouch is the lowest part of his peritoneal cavity.