Yes, but you'll need to find an IRA custodian that will accept. That said, forget about the big players like Fidelity. Search online, there's one called BitIRA (but be mindful of fees). Also, keep in mind you will need to open what is called a "self-directed" account. There's more info for you in the following article: https://www.cnbc.com/2018/03/05/people-are-putting-bitcoin-into-their-retirement-savings-.html