Can I get a list of times and MAC/IP addresses who've logged in to my apple account?

No, there is no normally user-accessible “record of access.”

However, you CAN download all ALL of your Apple Data from https://privacy.apple.com/

It does provide the list of devices and the dates they were first “attached” to your account. (after a bit of “spreadsheeting” to make the sizable CSV files more “human-readable”)

There might be other “nuggets of info” in the fairly voluminous “data dump” which you might also find useful.

Also look in https://appleid.apple.com to determine if other/unknown devices are signed-in to your account.

Lastly, depending on what you might find:

If you think your Apple ID has been compromised - Apple Support

hunteralarcon wrote:

This doesn’t answer my question, only tells me information I know now in an obvious way. He did have his own phone number, and family ID, but he had the same email as I did, and it wasn’t something I was able to tell until she blocked contact between a significant other and I on Valentine’s Day last winter.

Again, I’m asking IS THERE A WAY TO LOOK FOR A LOG OF LOGIN TIMES by MAC/ID?

Im hoping for an answer to my question…

Logs for this? Nope.

This is centrally a legal—civil or criminal—issue. Not technical. Contact a lawyer familiar with the local legal system for assistance, and discuss the alleged activities with them. Unauthorized access to computers can be considered a civil or criminal act in various jurisdictions.

The fundamental technical issue here is sharing of the Apple ID. That mixes together everything. That’s a mess without the legal aspects being alleged here.

Apple doesn’t keep particular logs of your own accesses and your own activities; these are all effectively your activities, because of the Apple ID sharing.

Basically, you already have a deliberately- and intentionally-compromised Apple ID.

… If you think your Apple ID has been compromised - Apple Support

Here is how to start to untangle the technical mess:

… Apple ID - Apple Community (mixed Apple IDs)

… Stop sharing Apple ID with wife - Apple Community (mixed Apple IDs)

… Personal Safety User Guide - Apple Support (untangling settings)

The overarching legal mess allegedly here is for the local legal system and the local lawyers to discuss.

No one can envy your predicament.

But THE ANSWER is that your son simply should have his own AppleID.

Sharing yours is a REALLY BAD practice for too many reasons to cite here; you’ve only scratched the surface.

Plus, the problems only get worse as your child gets older.

See more here:

Make sure that each family member has a unique Apple ID - Apple Support

Set up Family Sharing - Apple Support

Create an Apple ID for your child - Apple Support

Use parental controls on your child's iPhone, iPad, and iPod touch - Apple Support

No. That’s not possible. But the other party would need to know your Apple ID and password. Change your password and enable two-factor authentication. You can see the devices that are currently on your account at appleid.apple.com

If Apple ID is created from your primary Mac , however even your son / wife signs in the account from their device knowing all account credentials ( including password ) , or in web iCloud account , if they sign in with account credentials " n times " immediately mail is received the number of times it was signed , the ip address is not revealed .

Chattanoogan has all the correct answers and the support articles to assist with the solution. This should be an example for everyone on how to answer a user's question. I have nothing to add, just wanted to give the well deserved kudos. Hopefully the OP will be able to separate his Apple ID from his son's and not have to deal with those problems in the future.