Note that producers whose only presence in the photo industry at any time has been the manufacture of digital cameras (Logitech, for example, which has made Webcams) are listed separately on the List of digital camera brands.
There is not a very clear distinguishing line between camera producers and lens producers; many companies do both, or have done both at one time or another. Some camera manufacturers sell lenses made by others as their own, in an OEM arrangement. Some camera makers design lenses but outsource manufacture. Some lens makers have cameras made to sell under their own brand name. A few companies are only in the lens business. Some camera companies make no lenses, but usually at least sell a lens from some lens maker with their cameras as part of a package.
Note that many optical instruments such as microscopes, telescopes, spotting scopes and so forth can be used as photographic lenses; manufacturers of these types of equipment are not included here (unless they also make more conventional photo gear).
List of photographic film, paper & chemistry brands and manufacturers
Note films, paper and chemicals may be sold by a manufacturer who has produced the product under their own brand or alternatively under a brand name owned by one party, with manufacture and packaging of the product outsourced to third parties as well as many permutations of these options. Therefore, this list includes both brands and manufacturers with information (where known) on their current capability.
ADOX (Germany) Brand of B&W & Colour films, papers and chemistry. (Film 3rd party commissioned and Agfa-gevaert material) Film conversion capability. Resurrecting an Agfa Coater and access to former Ilford Imaging (Marly, Switzerland) coater.
Agfa-Gevaert (Belgium) Manufacturer of B&W Aerofilms & Microfilms. Business to business.
AgfaPhoto Holdings GMBH (Germany) Brand of B&W films. (Manufacture by Harman Technology)
Bellini (Italy) Manufacture of photographic chemicals
Bergger (France) Brand of B&W film (Manufacture by Inoviscoat) .
Calbe Chemie (Germany) Manufacture of photographic chemicals (formerly part of Agfa Wolfen/ORWO)
Carestream (USA) Manufacture of Kodak RA4 papers. (Formerly part of Kodak).
Champion (Malaysia) Manufacture of photographic chemicals
Compard (Germany) Manufacture/packing of photographic chemicals (ex Agfa products formerly supplied by Agfa chemical plant in Vaihingen-Enzs closed 2015)
Cinestill (USA) Converting/packing Kodak Motion Picture film without Remjet layer.
FILM Ferrania (Italy) Small scale manufacturer of B&W film
Rera (Japan) Conversion of B&W and color reversal film for 127 cameras (using 3rd party stock)
Revelog (Austria) Creative (pre-exposed) color films. (using 3rd party stock)
Rollei (Germany) Brand of Maco Photo Products B&W and Color film. (Manufactured by Agfa-Gevaert and Harman Technology). B&W/Color photographic chemicals
Shanghai (China) Manufacturer of B&W film, re-packaged ORWO cinefilms
Silberra (Russia) Brand of B&W films (Converting/packing Agfa-Gevaert B&W aerofilms)
Sinopromise (China) Kodak Flexicolor Chemistry and conversion/packing of Kodak RA4 paper. (Coated by Carestream)
Slavich (Russia) Manufacture of B&W photographic paper; Micron Division, photographic plates and films.
SPUR (Germany) Manufacture of photographic chemicals
Svema (Ukraine) Brand of Astrum Holdings. Converting/packing 3rd party B&W & Color aerofilms
Tasma (Russia) Manufacturer of Aerofilms. Business to business only.
Tetenal (Germany) Manufacture/packing of photographic chemicals under own brand and for Ilford & Kodak. Receivership in 2018.
Yodica (Italy) Creative (pre-exposed) color films. (using 3rd party stock)
AgfaPhoto GMBH (Leverkusen, Germany) Major producer of B&W and color negative and reversal films, papers and chemicals. Spun off from Agfa-Gevaert in 2004. Production ended 2005. Now a brand under Agfaphoto Holdings GMBH.
Lucky Film (China) Manufacture of B&W & Color films. Ceased photographic film production in 2012 (Color) 2018 (B&W).
Efke (Yugoslavia/Croatia) Manufacture of B&W films (the old ADOX formulas) and IR film. Closed 2012.
ERA (China) Manufacture of B&W film. 80% holding acquired by Kodak China in 1998. Closed 2008
Ferrania (Italy) Major producer of B&W film, cine film, color negative and reversal white label films and own Solaris brand. Closed 2012, Formerly owned by 3M and spun out into Imation. Sold x-ray business to Kodak. See FILM Ferrania.
Forte (Hungary) Manufacture of B&W film. Closed 2007
Fuda (China) Manufacture of B&W and Color film. Closed
Ilford Imaging (Switzerland) Ilfochrome/Cibachrome. Sold in 2005, plant closed 2013. See ADOX.
Ilford Imaging (UK) B&W film. Receivership 2004. Rescued in management buy out. See Harman Technology.
Kentmere (UK) B&W Papers. Acquired by Harman Technology 2007. Plant in Kentmere, Cumbria closed.
Konica (Japan) Major color film producer including white label brands, merged with Minolta, Closed film business in 2006.
Negra (Spain) Manufacture of B&W film. Closed 1984 
ORWO (Germany) (bankrupt 1995, Trademark sold to two different companies. Motion Picture stock now made by Filmotec, processing business sold to another firm.) See ORWO.
Perutz-Photowerke (founded in 1880 by Otto Perutz, since 1964 owned by Agfa, closed down in 1994)
Polaroid (USA) Bankrupt 2001 & 2008. See Polaroid B.V.
Revue (a label owned by PhotoQelle, a subsidiary of Quelle, known as Arcandor today; several sources claim that Revue films were actually repackaged stock leftover of other companies, first Fuji/3M, later Agfa)
Svema (Ukraine) Major soviet manufacturer of B&W, Colour negative and reversal film. Ceased production of film in 2000. Now a brand owned by Astrum.
Valca (Spain), Manufacture of B&W & X-ray film, from 1940 to 1993.
List of darkroom equipment manufacturers
AP Photo Industries (Spain) Darkroom equipment, film cartridges and cartridge loading equipment, disposable cameras
Beseler (USA) Photographic enlargers
De Vere (UK) Digital enlargers. Previous manufacturer of quality analog photographic enlargers.