The Canon EOS 3 is a 35mm autofocus film SLR introduced in 1998 for Canon's EF lens mount. It sat below the professional EOS-1 series, aimed at advanced enthusiasts and working photographers who wanted a fast, feature-rich body without the EOS-1N/1V price tag.

Sales data for the EOS 3 is thin, with one UK auction hammer result of £162 in June 2025 — a wholesale saleroom level rather than a retail asking price. On that single data point, the EOS 3 today sells for around £160 at auction, though buyers should expect clean, fully working bodies with the original eye-control viewfinder functioning to command more once more results are recorded.