Yes. Exaclty how much you have to disassemble your bike will vary based on the size of your bike and the box or case you are using to ship it. Typically, the smaller the box or case you use, the more you will have to disassemble your bike.
The most common disassembly steps include removing the pedals, one or both wheels, disc brake rotors, bottle cages, handlebars, seatpost and rear derailleur.
Learn more about how to pack your bike, and check out our YouTube channel for lots of packing videos.