Yes, you can often order a single chair to match your existing outdoor furniture set, but the process and success depend on several factors. The most straightforward path is if your set is from a current or recent collection by a major manufacturer. In this case, contacting the retailer or the manufacturer directly with the model name or number is your best bet. They may have replacement parts or individual pieces available for purchase.
If your set is older or discontinued, the challenge increases. Still, reach out to the manufacturer with photos and any identifying information; they might have leftover stock or suggest compatible pieces from newer lines. Exploring third-party retailers that specialize in replacement cushions or furniture components is another viable option. You might find a chair with a similar frame style or material that complements your set, even if it's not an exact match.
For a perfect match, especially with unique or custom sets, consulting a local furniture repair shop or a custom welder/craftsman could be the solution. They can potentially build or refinish a chair to blend seamlessly. When searching, focus on the primary material (e.g., wrought iron, aluminum, teak, wicker), finish color, and cushion fabric pattern or color. While finding an identical single chair requires effort, solutions exist through direct manufacturer contact, compatible third-party pieces, or custom fabrication.