How to hide comments for post or page?

Comments are enabled on WordPress posts and pages by default. You can change the default for new posts or pages, as well as enable/disable comments on posts or pages you’ve already published.

You can change the defaults for new posts or pages on the Settings -> Discussion screen.

To hide comments on the specific page go to “WP-admin > Pages” and click the “quick edit” link. You will see the “Allow Comments” checkbox (fig. 1):

Fig. 1. Disable comments via “quick edit.

You can do the same in the Page/Post Adding/Editing interface. Simply check the “Discussion” checkbox in Screen Option – corresponding “Discussion” box will appear (fig. 2):

Fig. 2. Disable comments from “Discussion” box.