The Ricoh Diacord L is a medium-format twin-lens reflex camera that takes 6x6 images on 120 roll film, produced by Japan's Riken Optical in the late 1950s. It sat in the affordable end of the TLR market and was aimed at amateur photographers stepping up from 35mm.

Sales data for the Diacord L is thin, but a March 2023 UK auction hammer result of £56 gives the only firm reference point for what one is worth at saleroom level today. With wholesale auction prices in the £50–£60 region for the single recorded example, the model sells for considerably less than higher-tier Japanese TLRs, and condition of the taking lens and shutter will move the price more than anything else.