This question is five years old but I do have the correct answer.

The original Canon EF 80-200mm f/4.5-5.6 did not have a provision to mount a lens hood so there is no designated lens hood for it.

One solution is to use a generic 52mm screw in lens hood.

A better solution is to use the Canon 62-L adapter which normally comes with the Canon ES-62 hood designed for the EF 50mm F/1.8 II. The 62-L adapter screws into the 52mm filter threads of any lens that uses 52mm filter threads. Once the 62-L is in place you can use the ES-62 or ET-62 clip on lens hood.

There are third party ES-62 lens hoods available cheaper than Canon, but be careful because many of them are not like the Canon ES-62. Some are actually one piece designs that just screw into the 52mm filter threads. They can not be stored reversed on the lens like a clip on design.

Others are two piece designs but the hood mounts to the adapter with a bayonet mount instead of a clip on mount. The only problem here is that a Canon ES-62 or ET-62 hood might not mount properly on the third party adapter.