MS TEAMS ID

If you want to check the organizations you are participating in as a guest, please refer to the information below.
This includes guest access not only in Teams, but also in SharePoint and OneDrive for Business.
Sign in to the Azure portal, and in “Settings” at the top right of the screen, check the list of organization directories.

<Japanese>
ゲストとして参加している組織を調べたい場合は下記を参照してみてください。
但し、TeamsだけでなくSharePointやOneDrive for Businessでのゲスト参加も含まれます。
Azure portalにサインインして、画面右上の"設定"にて組織のディレクトリ一覧を確認してください。

Hi!

Welcome to Microsoft Q&A forum.

Microsoft Teams does not have an ID field at all rather, what you require will depend what kind of ID are you looking for.

In most cases, clicking the image icon in the top-right corner, your email address will be displayed, which will be your ID in Microsoft Teams.

Let me know what exactly are you trying to find when you say Teams ID.