diff --git a/source/_data/glossary.yml b/source/_data/glossary.yml
index 09359c15665c..95edca5bf14e 100644
--- a/source/_data/glossary.yml
+++ b/source/_data/glossary.yml
@@ -296,8 +296,9 @@
     - groups
 - term: HASS
   definition: >-
-    HASS or [hass](/docs/tools/hass/) is often used as an abbreviation for Home
-    Assistant. It is also the command-line tool.
+    HASS is an abbreviation for Home Assistant that was commonly used in the past.
+    This abbreviation is no longer actively used. It is recommended to use the full
+    name "Home Assistant" instead of abbreviations.
 - term: HassOS
   definition: >-
     Another name for Home Assistant Operating System
diff --git a/source/_docs/tools/hass.markdown b/source/_docs/tools/hass.markdown
deleted file mode 100644
index 26dcd7be8c3f..000000000000
--- a/source/_docs/tools/hass.markdown
+++ /dev/null
@@ -1,36 +0,0 @@
----
-title: "hass"
-description: "Description of hass."
----
-
-The command-line part of Home Assistant is `hass`.
-
-This tool is only available to users of the Home Assistant Core installation type. It is started from the command line on the computer running Home Assistant Core (accessed perhaps via SSH).
-
-```text
-$ hass -h
-usage: hass [-h] [--version] [-c path_to_config_dir] [--safe-mode]
-            [--debug] [--open-ui] [--skip-pip] [-v] [--log-rotate-days LOG_ROTATE_DAYS] 
-            [--log-file LOG_FILE] [--log-no-color] [--script ...] [--ignore-os-check]
-
-Home Assistant: Observe, Control, Automate.
-
-optional arguments:
-  -h, --help            show this help message and exit
-  --version             show program's version number and exit
-  -c path_to_config_dir, --config path_to_config_dir
-                        Directory that contains the Home Assistant configuration
-  --safe-mode           Start Home Assistant in safe mode
-  --debug               Start Home Assistant in debug mode
-  --open-ui             Open the webinterface in a browser
-  --skip-pip            Skips pip install of required packages on startup
-  -v, --verbose         Enable verbose logging to file.
-  --log-rotate-days LOG_ROTATE_DAYS
-                        Enables daily log rotation and keeps up to the specified days
-  --log-file LOG_FILE   Log file to write to. If not set, CONFIG/home-assistant.log is used
-  --log-no-color        Disable color logs
-  --script ...          Run one of the embedded scripts
-  --ignore-os-check     Skips validation of operating system
-
-If restart is requested, exits with code 100
-```
diff --git a/source/_includes/asides/docs_sitemap.html b/source/_includes/asides/docs_sitemap.html
index 89d27716a2ce..82301222e68b 100644
--- a/source/_includes/asides/docs_sitemap.html
+++ b/source/_includes/asides/docs_sitemap.html
@@ -246,7 +246,6 @@
   <ul>
     <li>{% active_link /docs/tools/dev-tools/ Developer tools %}</li>
     <li>{% active_link /docs/tools/quick-bar/ Quick bar %}</li>
-    <li>{% active_link /docs/tools/hass/ hass %}</li>
     <li>{% active_link /docs/tools/check_config/ check_config %}</li>
   </ul>
   {% endif %}
diff --git a/source/_posts/2017-10-28-demo.markdown b/source/_posts/2017-10-28-demo.markdown
index ce40642b6d60..056d8e049e33 100644
--- a/source/_posts/2017-10-28-demo.markdown
+++ b/source/_posts/2017-10-28-demo.markdown
@@ -22,7 +22,7 @@ The simplest way to show Home Assistant to others is the online demo at [/demo/]
 
 ## `--demo-mode` and Demo platform
 
-To be safe for your talk, you don't want to depend on an internet connection. The demo mode [`--demo-mode`](/docs/tools/hass/) allows you to run a demo locally including the latest features. Make sure that you have a backup of your configuration.
+To be safe for your talk, you don't want to depend on an internet connection. The demo mode `--demo-mode` allows you to run a demo locally including the latest features. Make sure that you have a backup of your configuration.
 
 ```bash
 hass --demo-mode
diff --git a/source/help/trivia.markdown b/source/help/trivia.markdown
index 09994c9b6695..00634bba3875 100644
--- a/source/help/trivia.markdown
+++ b/source/help/trivia.markdown
@@ -8,7 +8,7 @@ This page contains only irrelevant and unhelpful information about Home Assistan
 
 ## Name
 
-Isn't it obvious? Home Assistant is the good soul that is assisting you in your home. It's common to refer to Home Assistant simply as HA or `hass` (not to be confused with the German word "Hass", it's more like the abbreviation of **H**ome **A**ssistant **S**erver **S**ervice). [`hass`](/docs/tools/hass/) is also the name of the command-line part.
+Isn't it obvious? Home Assistant is the good soul that is assisting you in your home. The abbreviation `hass` (not to be confused with the German word "Hass", it's more like the abbreviation of **H**ome **A**ssistant **S**erver **S**ervice) was commonly used in the past, though it's now recommended to use the full name "Home Assistant" in documentation.
 
 ## Website