diff --git a/changelogs/fragments/441-json-add-indent-parameter.yaml b/changelogs/fragments/441-json-add-indent-parameter.yaml
new file mode 100644
index 0000000..8a0359b
--- /dev/null
+++ b/changelogs/fragments/441-json-add-indent-parameter.yaml
@@ -0,0 +1,2 @@
+minor_changes:
+  - json and jsonl - Add the ``ANSIBLE_JSON_INDENT`` parameter
diff --git a/plugins/callback/json.py b/plugins/callback/json.py
index 512f25b..6f86bd1 100644
--- a/plugins/callback/json.py
+++ b/plugins/callback/json.py
@@ -25,6 +25,16 @@ DOCUMENTATION = '''
           - key: show_custom_stats
             section: defaults
         type: bool
+      json_indent:
+        name: Use indenting for the JSON output
+        description: 'If specified, use this many spaces for indenting in the JSON output. If <= 0, write to a single line.'
+        default: 4
+        env:
+          - name: ANSIBLE_JSON_INDENT
+        ini:
+          - key: json_indent
+            section: defaults
+        type: integer
     notes:
       - When using a strategy such as free, host_pinned, or a custom strategy, host results will
         be added to new task results in ``.plays[].tasks[]``. As such, there will exist duplicate
@@ -61,6 +71,12 @@ class CallbackModule(CallbackBase):
         self._task_map = {}
         self._is_lockstep = False
 
+        self.set_options()
+
+        self._json_indent = self.get_option('json_indent')
+        if self._json_indent <= 0:
+            self._json_indent = None
+
     def _new_play(self, play):
         self._is_lockstep = play.strategy in LOCKSTEP_CALLBACKS
         return {
@@ -145,7 +161,7 @@ class CallbackModule(CallbackBase):
             'global_custom_stats': global_custom_stats,
         }
 
-        self._display.display(json.dumps(output, cls=AnsibleJSONEncoder, indent=4, sort_keys=True))
+        self._display.display(json.dumps(output, cls=AnsibleJSONEncoder, indent=self._json_indent, sort_keys=True))
 
     def _record_task_result(self, on_info, result, **kwargs):
         """This function is used as a partial to add failed/skipped info in a single method"""
diff --git a/plugins/callback/jsonl.py b/plugins/callback/jsonl.py
index dc77b03..1e03163 100644
--- a/plugins/callback/jsonl.py
+++ b/plugins/callback/jsonl.py
@@ -26,6 +26,16 @@ DOCUMENTATION = '''
           - key: show_custom_stats
             section: defaults
         type: bool
+      json_indent:
+        name: Use indenting for the JSON output
+        description: 'If specified, use this many spaces for indenting in the JSON output. If not specified or <= 0, write to a single line.'
+        default: 0
+        env:
+          - name: ANSIBLE_JSON_INDENT
+        ini:
+          - key: json_indent
+            section: defaults
+        type: integer
     notes:
       - When using a strategy such as free, host_pinned, or a custom strategy, host results will
         be added to new task results in ``.plays[].tasks[]``. As such, there will exist duplicate
@@ -63,6 +73,12 @@ class CallbackModule(CallbackBase):
         self._task_map = {}
         self._is_lockstep = False
 
+        self.set_options()
+
+        self._json_indent = self.get_option('json_indent')
+        if self._json_indent <= 0:
+            self._json_indent = None
+
     def _new_play(self, play):
         self._is_lockstep = play.strategy in LOCKSTEP_CALLBACKS
         return {
@@ -158,7 +174,7 @@ class CallbackModule(CallbackBase):
     def _write_event(self, event_name, output):
         output['_event'] = event_name
         output['_timestamp'] = current_time()
-        self._display.display(json.dumps(output, cls=AnsibleJSONEncoder, separators=',:', sort_keys=True))
+        self._display.display(json.dumps(output, cls=AnsibleJSONEncoder, indent=self._json_indent, separators=',:', sort_keys=True))
 
     def _record_task_result(self, event_name, on_info, result, **kwargs):
         """This function is used as a partial to add failed/skipped info in a single method"""