What are good MOS's to transfer to civilian careers?

If you're looking for a Career, get rid of that mentality of "a job with skills that transfer".

Do you really think that after 20+ years you'll be for an entry level job with the entry level skills you picked up from your MOS? I hope you dream bigger than that.

After 20 years you'll need to get new certifications in whatever career field you choose. No matter what field you choose, you'll almost certainly need to take some classes to be on par with your civilian peers.

So, don't worry about what you'll do in 20 years, there's no way you'll know what you'll want to do by then. Just pick something you enjoy doing and can stand doing till you retire

51C is 100% transferable

Where does your subject expertise lie? What field do find most intriguing and challenging? That is your field.
You will find the most reward in a field where you can conquer challenges. If you are intrigued with the subject, the desire to find out all you can about it, besides, you will enjoy it; and that, my friend, is the deal maker.

Cyber is where it's at right now, but if I could go back and do it all over again I'd choose 12P or 88M. Now that I'm looking at getting my CDL I realize 88Ms are damn near guaranteed one if they past the written test at DMV.

Come fly. I was a 12B Reserve and made the switch to active Flight Warrant. Best decision I’ve ever made.

Firmer 12B myself. Reclassed to 35 Series. Great decision.

If you want a medical career try 68P Radiological Specialist. The military school at Fort Sam is fully accredited on the civilian side. So you are able to take the exam and be a registered Xray tech.

Most support MOS provide some skills that transfer to the civilian world. Technical skills as a heavy equipment operator, welder, carpenter, plumber, warehouse manager, accounting technician, IT technician can transfer to similar jobs in the civilian world. Recruiting training and experience sets you up for careers in sales and marketing. Combat Engineers who build stuff and blow stuff up are well positioned for jobs in construction industry and mining. In broader terms logistical MOS have parallels in civilian industry. Transportation or logistics planning can directly transfer to the trucking industry or rail industry. If you gain experience loading and unloading ships you can move into longshoreman work. Same with crane operator for loading/unloading containers.

Another way to think of it is to take an item you use in your daily duty and research it's life cycle back from your use of it. Consider how it got to you or your unit. How the Government paid for it. Where it was stored when you weren't using it or before the Government bought it. What company made it and where was it made? What skills were needed to manufacture it. What raw materials are needed to make the parts? How is it disposed of when you are done with it or when it fails. All along that supply chain are people doing jobs that your Army MOS may have trained you to handle.

68A biomedical repair specialist. You work on medical equipment and xan attend a variety of courses such as the GE Externship program to get certified on their equipment. Has warrant potential and can make up to 6 figures on the civilian side based on your skills and knowledge

Having been retired longer (26 years) than I served (20 years), I have found that my service as an enlisted and later as a warrant officer in the CID has served me well after I retired. It helped me as an insurance investigator, corporate investigator, intelligence screener, chief deputy coroner, contract background investigator and a watch commander of an INS detention facility.