How to Block Someone From Commenting on Instagram

What happens when you block comments

New comments from that person are only visible to them.
They can still see your photos and videos if your account or post visibility allows it.
Their older comments are not removed automatically.
To limit more than comments, use Restrict or Block.

Open Instagram in your browser and log in.
Click More, then Settings.
Open Comments if the option appears under interaction settings.
If comment blocking controls are not available on web, use the Instagram mobile app.

Do not block the account if you only want to stop comments. Use comment settings instead.

Instagram says blocking someone from commenting does not remove previous comments. Delete old comments separately.

That is expected. Comment blocking does not control messages. Use message controls, restrict, or block if needed.

Yes. Search for that person in the blocked commenters setting.

No. It only affects their new comments on your photos and videos.

Restricting is broader: it also affects messages and comment visibility. Comment blocking is narrower.

Instagram does not send a notification. Because their new comments are visible to them, they may not realize it immediately.

This guide is based on Instagram's official help article about blocking or unblocking someone from commenting.