No.
If you don't know the email you used or the phone number connected to it, you cannot recover it.

Those are two of the basic "proof of ownership" things.
If you can't prove you own the account Support will not give you access.

Originally posted by Unknown1:

Issue with an forgotten account with Steam Mobile, I don't have the phone number or mail of that account is there a way to recover it?

Do you still remember your email and phone number?

You don't need access to the email, phone or password currently tied to the stolen/lost account to recover it.


Account recovery

The recovery process allows you to contact Steam Support to provide proof of ownership.

Follow this guide to recover your account:

https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3456188107

Support articles about account recovery:

Recovering a Stolen or Hijacked Steam Account

Providing Proof of Ownership

Link from the guide to start the recovery process:

https://help.steampowered.com/en/wizard/HelpWithLoginInfo?accountsearch=1&issueid=408&reset=1

....

It's really weird to see that :

Originally posted by Lilim:

(...) You don't need access to the email, phone or password currently tied to the stolen/lost account to recover it.
1(...)

Unable to truthful if those are not accessibles from the people that want recover their account.

By past I traded mostly posts where a Stolen account is unrecoverable, even if you submit proofs...
So without even e-mail access or phone access, it would be really nonsense?

Account recovery is perfectly possible without anything else except the account name, please read up before spreading false info's. Thanks.