Absolutely! It's a very common need. Outdoor trash cans take a beating from the weather, rough handling, and heavy loads, so hinges are often the first thing to break. The good news is, yes, you can usually purchase replacement parts.
Your best starting point is to check the manufacturer's website directly. Look for a "Parts" or "Support" section. Many major brands like Rubbermaid, Simplehuman, or Toter sell specific replacement hinges, lids, wheels, and latches for their models. Having your trash can's model number (often stamped on the bottom or inside the rim) will make this search much easier.
If the manufacturer doesn't sell them, don't worry. General hardware stores like Home Depot, Lowe's, or Ace Hardware often carry universal or adjustable trash can hinges in their repair aisles. Online marketplaces like Amazon or eBay are also excellent resources. Search using terms like "universal outdoor trash can hinge" or include your bin's brand and size. Be sure to measure your old hinge's screw hole spacing and overall size to ensure a good fit.
For a truly broken can, a simple hinge replacement is a quick and cost-effective DIY fix. Usually, you just need a screwdriver to remove the old hardware and install the new one. It saves you the cost and hassle of buying a whole new bin. So before you give up on that trusty trash can, see if a few new hinges can give it a second life!