diff --git a/changelogs/fragments/978-bools.yml b/changelogs/fragments/978-bools.yml
new file mode 100644
index 00000000000..8021fe7f256
--- /dev/null
+++ b/changelogs/fragments/978-bools.yml
@@ -0,0 +1,2 @@
+trivial:
+- various modules - Adjust booleans from ``yes``/``no`` to ``true``/``false`` in docs (https://github.com/ansible-collections/amazon.aws/pull/978).
diff --git a/plugins/modules/cloudformation.py b/plugins/modules/cloudformation.py
index 3b4d4312f32..a23397f8613 100644
--- a/plugins/modules/cloudformation.py
+++ b/plugins/modules/cloudformation.py
@@ -257,7 +257,7 @@
     stack_name: my_stack
     state: present
     template_url: https://s3.amazonaws.com/my-bucket/cloudformation.template
-    termination_protection: yes
+    termination_protection: true
 
 # Configure TimeoutInMinutes before the stack status becomes CREATE_FAILED
 # In this case, if disable_rollback is not set or is set to false, the stack will be rolled back.
diff --git a/plugins/modules/cloudformation_info.py b/plugins/modules/cloudformation_info.py
index b2355e3fdaa..2090451b51a 100644
--- a/plugins/modules/cloudformation_info.py
+++ b/plugins/modules/cloudformation_info.py
@@ -98,7 +98,7 @@
 - name: try to get info about a stack but fail if it doesn't exist
   amazon.aws.cloudformation_info:
     stack_name: nonexistent-stack
-    all_facts: yes
+    all_facts: true
   failed_when: cloudformation['nonexistent-stack'] is undefined
 '''
 
diff --git a/plugins/modules/ec2_ami.py b/plugins/modules/ec2_ami.py
index 39979e3438b..d5bd2015f7a 100644
--- a/plugins/modules/ec2_ami.py
+++ b/plugins/modules/ec2_ami.py
@@ -80,7 +80,7 @@
         type: str
         description:
           - The device name. For example C(/dev/sda).
-        required: yes
+        required: true
       virtual_name:
         type: str
         description:
@@ -162,7 +162,7 @@
 - name: Basic AMI Creation
   amazon.aws.ec2_ami:
     instance_id: i-xxxxxx
-    wait: yes
+    wait: true
     name: newtest
     tags:
       Name: newtest
@@ -212,7 +212,7 @@
           delete_on_termination: true
           volume_type: gp2
         - device_name: /dev/sdb
-          no_device: yes
+          no_device: true
 
 - name: Deregister/Delete AMI (keep associated snapshots)
   amazon.aws.ec2_ami:
diff --git a/plugins/modules/ec2_ami_info.py b/plugins/modules/ec2_ami_info.py
index 3e70d0ee05f..f0e61e1d041 100644
--- a/plugins/modules/ec2_ami_info.py
+++ b/plugins/modules/ec2_ami_info.py
@@ -43,7 +43,7 @@
   describe_image_attributes:
     description:
       - Describe attributes (like launchPermission) of the images found.
-    default: no
+    default: false
     type: bool
 
 extends_documentation_fragment:
@@ -140,7 +140,7 @@
       sample: machine
     launch_permissions:
       description: A List of AWS accounts may launch the AMI.
-      returned: When image is owned by calling account and I(describe_image_attributes) is yes.
+      returned: When image is owned by calling account and I(describe_image_attributes=true).
       type: list
       elements: dict
       contains:
diff --git a/plugins/modules/ec2_snapshot.py b/plugins/modules/ec2_snapshot.py
index 08e0407a5b1..07854bfcc3f 100644
--- a/plugins/modules/ec2_snapshot.py
+++ b/plugins/modules/ec2_snapshot.py
@@ -46,7 +46,7 @@
       - Wait for the snapshot to be ready.
     type: bool
     required: false
-    default: yes
+    default: true
   wait_timeout:
     description:
       - How long before wait gives up, in seconds.
diff --git a/plugins/modules/ec2_vol.py b/plugins/modules/ec2_vol.py
index c8fc036a764..39a5300d842 100644
--- a/plugins/modules/ec2_vol.py
+++ b/plugins/modules/ec2_vol.py
@@ -142,7 +142,7 @@
 - amazon.aws.ec2:
     keypair: "{{ keypair }}"
     image: "{{ image }}"
-    wait: yes
+    wait: true
     count: 3
   register: ec2
 - amazon.aws.ec2_vol:
@@ -160,7 +160,7 @@
     image: "{{ image }}"
     zone: YYYYYY
     id: my_instance
-    wait: yes
+    wait: true
     count: 1
   register: ec2
 
@@ -202,7 +202,7 @@
     instance: XXXXXX
     id: XXXXXX
     device_name: /dev/sdf
-    delete_on_termination: yes
+    delete_on_termination: true
 '''
 
 RETURN = '''
diff --git a/plugins/modules/ec2_vpc_dhcp_option.py b/plugins/modules/ec2_vpc_dhcp_option.py
index 7c295aa82db..a731884fbda 100644
--- a/plugins/modules/ec2_vpc_dhcp_option.py
+++ b/plugins/modules/ec2_vpc_dhcp_option.py
@@ -66,7 +66,7 @@
         will be ignored, and the old DHCP option set will be preserved, if it
         is in use by any other VPC. (Otherwise, AWS will return an error.)
     type: bool
-    default: 'yes'
+    default: true
   inherit_existing:
     description:
       - For any DHCP options not specified in these parameters, whether to
diff --git a/plugins/modules/ec2_vpc_endpoint.py b/plugins/modules/ec2_vpc_endpoint.py
index 9c764f5d824..cfd27988d59 100644
--- a/plugins/modules/ec2_vpc_endpoint.py
+++ b/plugins/modules/ec2_vpc_endpoint.py
@@ -87,7 +87,7 @@
       - Unfortunately this is ignored for delete actions due to a difference in
         behaviour from AWS.
     required: false
-    default: no
+    default: false
     type: bool
   wait_timeout:
     description:
diff --git a/plugins/modules/ec2_vpc_nat_gateway.py b/plugins/modules/ec2_vpc_nat_gateway.py
index e65ce2fd6b3..25c4d41a9e6 100644
--- a/plugins/modules/ec2_vpc_nat_gateway.py
+++ b/plugins/modules/ec2_vpc_nat_gateway.py
@@ -152,7 +152,7 @@
     state: absent
     nat_gateway_id: nat-12345678
     release_eip: true
-    wait: yes
+    wait: true
     wait_timeout: 300
     region: ap-southeast-2
 
@@ -172,10 +172,10 @@
     subnet_id: subnet-12345678
     allocation_id: eipalloc-12345678
     region: ap-southeast-2
-    purge_tags: no
+    purge_tags: false
     tags:
         Tag3: tag3
-    wait: yes
+    wait: true
   register: update_tags_nat_gateway
 '''
 
diff --git a/plugins/modules/ec2_vpc_net.py b/plugins/modules/ec2_vpc_net.py
index d6138158c70..872c6a45042 100644
--- a/plugins/modules/ec2_vpc_net.py
+++ b/plugins/modules/ec2_vpc_net.py
@@ -50,7 +50,7 @@
   purge_cidrs:
     description:
       - Remove CIDRs that are associated with the VPC and are not specified in I(cidr_block).
-    default: no
+    default: false
     type: bool
   tenancy:
     description:
diff --git a/plugins/modules/elb_classic_lb.py b/plugins/modules/elb_classic_lb.py
index ec11f585514..353e122b965 100644
--- a/plugins/modules/elb_classic_lb.py
+++ b/plugins/modules/elb_classic_lb.py
@@ -360,13 +360,13 @@
 - amazon.aws.elb_classic_lb:
     name: "test-please-delete"
     state: absent
-    wait: yes
+    wait: true
 
 # Ensure ELB is gone and wait for check with timeout value
 - amazon.aws.elb_classic_lb:
     name: "test-please-delete"
     state: absent
-    wait: yes
+    wait: true
     wait_timeout: 600
 
 # Normally, this module will purge any listeners that exist on the ELB
@@ -382,7 +382,7 @@
       - protocol: http
         load_balancer_port: 80
         instance_port: 80
-    purge_listeners: no
+    purge_listeners: false
 
 # Normally, this module will leave availability zones that are enabled
 # on the ELB alone. If purge_zones is true, then any extraneous zones
@@ -397,7 +397,7 @@
       - protocol: http
         load_balancer_port: 80
         instance_port: 80
-    purge_zones: yes
+    purge_zones: true
 
 # Creates a ELB and assigns a list of subnets to it.
 - amazon.aws.elb_classic_lb:
@@ -405,7 +405,7 @@
     name: 'New ELB'
     security_group_ids: 'sg-123456, sg-67890'
     subnets: 'subnet-123456,subnet-67890'
-    purge_subnets: yes
+    purge_subnets: true
     listeners:
       - protocol: http
         load_balancer_port: 80
@@ -440,7 +440,7 @@
         instance_port: 80
     stickiness:
       type: loadbalancer
-      enabled: yes
+      enabled: true
       expiration: 300
 
 # Create an ELB with application stickiness enabled
@@ -456,7 +456,7 @@
         instance_port: 80
     stickiness:
       type: application
-      enabled: yes
+      enabled: true
       cookie: SESSIONID
 
 # Create an ELB and add tags
diff --git a/plugins/modules/s3_bucket.py b/plugins/modules/s3_bucket.py
index 27abe82aaf0..320a7cc535a 100644
--- a/plugins/modules/s3_bucket.py
+++ b/plugins/modules/s3_bucket.py
@@ -35,7 +35,7 @@
       - When trying to delete a bucket, delete all keys (including versions and delete markers)
         in the bucket first (an S3 bucket must be empty for a successful deletion).
     type: bool
-    default: 'no'
+    default: false
   name:
     description:
       - Name of the S3 bucket.
@@ -192,14 +192,14 @@
 - amazon.aws.s3_bucket:
     name: mys3bucket
     state: absent
-    force: yes
+    force: true
 
 # Create a bucket, add a policy from a file, enable requester pays, enable versioning and tag
 - amazon.aws.s3_bucket:
     name: mys3bucket
     policy: "{{ lookup('file','policy.json') }}"
-    requester_pays: yes
-    versioning: yes
+    requester_pays: true
+    versioning: true
     tags:
       example: tag1
       another: tag2
diff --git a/plugins/modules/s3_object.py b/plugins/modules/s3_object.py
index 9cf270dfd25..f18220f23b8 100644
--- a/plugins/modules/s3_object.py
+++ b/plugins/modules/s3_object.py
@@ -965,7 +965,7 @@ def main():
         overwrite=dict(aliases=['force'], default='different'),
         prefix=dict(default=""),
         retries=dict(aliases=['retry'], type='int', default=0),
-        dualstack=dict(default='no', type='bool'),
+        dualstack=dict(default=False, type='bool'),
         ceph=dict(default=False, type='bool', aliases=['rgw']),
         src=dict(type='path'),
         content=dict(),