The Zeiss Ikon Trona (models 210, 212, 214) is a folding bellows plate and rollfilm camera from the German maker Zeiss Ikon, produced in the interwar period of the 1920s and 1930s. It sat in the mid-range of Zeiss Ikon's folding camera line-up when new.

Sales data for the Trona series is very thin, with only a single recorded UK auction hammer result of £37 in early 2022. On that limited evidence, a Trona today is worth a modest sum at saleroom level, but a wider price range cannot be reliably stated from the available data.