diff --git a/java/google/registry/ui/soy/registrar/Domain.soy b/java/google/registry/ui/soy/registrar/Domain.soy
index 7415d603a..3a3b2b065 100644
--- a/java/google/registry/ui/soy/registrar/Domain.soy
+++ b/java/google/registry/ui/soy/registrar/Domain.soy
@@ -128,7 +128,10 @@
         <tr>
           <td>Mark Data
             <td>
-              <textarea class="{css('reg-domain-mark')}" {if $readonly}readonly{/if}>
+              <textarea
+                  class="{css('reg-domain-mark')}"
+                  spellcheck="false"
+                  {if $readonly}readonly{/if}>
                 {$item['mark:mark']['keyValue']}</textarea>
             </td>
         </tr>
diff --git a/java/google/registry/ui/soy/registrar/OteSetupConsole.soy b/java/google/registry/ui/soy/registrar/OteSetupConsole.soy
index 457bdcd26..e1cc3315f 100644
--- a/java/google/registry/ui/soy/registrar/OteSetupConsole.soy
+++ b/java/google/registry/ui/soy/registrar/OteSetupConsole.soy
@@ -74,7 +74,7 @@
             <span class="{css('description')}">Copy and paste this into an email to the registrars</span>
           </td>
           <td class="{css('setting')}">
-            <textarea rows="7" cols="100" readonly>
+            <textarea rows="7" cols="100" spellcheck="false" readonly>
               {for $clientId in mapKeys($clientIdToTld)}
                   Login: {$clientId}{sp}{sp}{sp}{sp}{sp}{sp}
                   Password: {$password}{sp}{sp}{sp}{sp}{sp}{sp}
diff --git a/java/google/registry/ui/soy/registrar/RegistrarCreateConsole.soy b/java/google/registry/ui/soy/registrar/RegistrarCreateConsole.soy
index d0fad2c4c..5779667b5 100644
--- a/java/google/registry/ui/soy/registrar/RegistrarCreateConsole.soy
+++ b/java/google/registry/ui/soy/registrar/RegistrarCreateConsole.soy
@@ -113,7 +113,7 @@
             <span class="{css('description')}">Copy and paste this into an email to the registrars</span>
           </td>
           <td class="{css('setting')}">
-            <textarea rows="5" cols="30" readonly>
+            <textarea rows="5" cols="30" spellcheck="false" readonly>
               Login: {$clientId}{\n}
               Password: {$password}{\n}
               Phone passcode: {$passcode}{\n}
@@ -199,6 +199,7 @@
                "Example:{\n}
                 USD=billing-id-for-usd{\n}
                 JPY=billing-id-for-yen{\n}"
+             spellcheck="false"
              required>{$billingAccount ?: ''}</textarea>
         </td>
       </tr>
diff --git a/java/google/registry/ui/soy/registrar/SecuritySettings.soy b/java/google/registry/ui/soy/registrar/SecuritySettings.soy
index da798bf62..42bff7223 100644
--- a/java/google/registry/ui/soy/registrar/SecuritySettings.soy
+++ b/java/google/registry/ui/soy/registrar/SecuritySettings.soy
@@ -87,6 +87,7 @@
                name="clientCertificate"
                rows="16"
                cols="68"
+               spellcheck="false"
                {if $readonly}readonly{/if}>{$clientCertificate}</textarea>
           {elseif isNonnull($clientCertificateHash)}
             {if $readonly}
@@ -100,7 +101,7 @@
                 <span class="{css('description')}">Existing certificate SHA256 base64 hash:</span>
                 {$clientCertificateHash}
             {else}
-              <textarea name="clientCertificate" rows="16" cols="68"></textarea>
+              <textarea name="clientCertificate" rows="16" cols="68" spellcheck="false"></textarea>
             {/if}
           {else}
             {if $readonly}
@@ -109,10 +110,11 @@
               <p>No certificate on file.  Please enter your certificate below.
               <textarea id="clientCertificate"
                         name="clientCertificate"
-                        rows="16" cols="68"></textarea>
+                        rows="16" cols="68"
+                        spellcheck="false"></textarea>
               <div class="{css('description')}">
                 Example format:
-                <textarea id="exampleCert" rows="17" cols="68" readonly>
+                <textarea id="exampleCert" rows="17" cols="68" spellcheck="false" readonly>
                   -----BEGIN CERTIFICATE-----{\n}
                   MIIDvTCCAqWgAwIBAgIJAK/PgPT0jTwRMA0GCSqGSIb3DQEBCwUAMHUxCzAJBgNV{\n}
                   BAYTAlVTMREwDwYDVQQIDAhOZXcgWW9yazERMA8GA1UEBwwITmV3IFlvcmsxDzAN{\n}
@@ -158,6 +160,7 @@
                       name="failoverClientCertificate"
                       rows="16"
                       cols="68"
+                      spellcheck="false"
                       {if $readonly}readonly{/if}>
               {$failoverClientCertificate ?: ''}
             </textarea>