wpsimpletools

Completely disables comments functionality from backend and frontend: 
* Hides existing comments 
* Close comments on the front-end 
* Disable support for comments, trackbacks and ping 
* Redirects any user trying to access comments page 
* Removes comments metabox from dashboard 
* Removes comments links from admin bar 
* Removes comments page in menu 
* Completely disables comments API

Disable Comments

The type of plugin I just love... does exactly what it says, no configuration necessary, source readable and understandable in minutes.

Simple, effective, no config ✅

Completely disables comments functionality from backend and frontend. Just install it, nothing to configure!

keith_wp

If you’d like to have some comments on your site, but don’t want them on every kind of post, then this plugin is for you.
Go to the Discussion Settings of your site and select which post types, taxonomies and/or terms will automatically disable commenting, regardless of the individual post setting.

Disable Comments Selectively

Choose which post types, taxonomies and/or terms will have comments disabled.

Disable Comments vs Disable Comments Selectively