The Canon FD 200mm f/4 is a manual-focus medium telephoto prime for Canon's FD breech-lock and later bayonet FD mount, introduced as part of the FD system that ran from 1971 to 1987. It was designed as an affordable, compact short telephoto suitable for portraiture, sports and general field work on Canon SLRs of the period.

Sales data is very thin: a single recorded UK auction hammer result from October 2023 sold for £20, which sits at the wholesale saleroom level rather than dealer retail. On that limited evidence the FD 200mm f/4 is currently worth around £20 at auction today, and tidy, fungus-free copies tend to sell for modest sums because the FD telephoto market is well supplied. Later bayonet-mount FDn versions in clean cosmetic condition typically command a small premium over earlier breech-lock examples when they appear.