A dog waste catcher and holder is a very simple, light-weight and economical portable device designed to catch and hold a dog's droppings before they fall on the ground or grass. It is carried by a dog's owner or caretaker while he or she walks the dog. This is a device comprised of a loop shaped device to hold a plastic bag, a carrying rod of which one end is attached to the loop shaped device, a securing device such as a bracket to attach the loop shaped device to one end of the carrying rod, and a plastic bag, preferably a plastic bag such as a grocery bag, etc. placed inside the loop shaped device with its upper portion folded over the loop and its ends tied to the rod where the loop shaped device is attached. As soon as the dog shows the motion to excrete, this device can be placed under the dog's bottom and catches the waste in the plastic bag as it excretes. Once the dog has finished excreting, the plastic bag is removed and discarded. This is a very simple and sanitary way of catching and discarding the dog waste.