diff --git a/MIGRATION.md b/MIGRATION.md
index fb96493bc8ce..64a795237c24 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -273,6 +273,7 @@ For our efforts to reduce bundle size of the SDK we had to remove and refactor p
 - Remove deprecated `whitelistUrls` and `blacklistUrls` options from `Sentry.init`. They have been superseded by `allowUrls` and `denyUrls` specifically. See [our docs page on inclusive language](https://develop.sentry.dev/inclusion/) for more details.
 - Gatsby SDK: Remove `Sentry` from `window` object.
 - Remove deprecated `Status`, `SessionStatus`, and `RequestSessionStatus` enums. These were only part of an internal API. If you are using these enums, we encourage you to to look at [b177690d](https://github.com/getsentry/sentry-javascript/commit/b177690d89640aef2587039113c614672c07d2be), [5fc3147d](https://github.com/getsentry/sentry-javascript/commit/5fc3147dfaaf1a856d5923e4ba409479e87273be), and [f99bdd16](https://github.com/getsentry/sentry-javascript/commit/f99bdd16539bf6fac14eccf1a974a4988d586b28) to to see the changes we've made to our code as result. We generally recommend using string literals instead of the removed enums.
+- Remove 'critical' severity.
 - Remove deprecated `getActiveDomain` method and `DomainAsCarrier` type from `@sentry/hub`.
 - Rename `registerRequestInstrumentation` to `instrumentOutgoingRequests` in `@sentry/tracing`.
 - Remove `Backend` and port its functionality into `Client` (see
diff --git a/packages/hub/test/scope.test.ts b/packages/hub/test/scope.test.ts
index b734ac59fcf6..1bad52db6d9f 100644
--- a/packages/hub/test/scope.test.ts
+++ b/packages/hub/test/scope.test.ts
@@ -85,8 +85,8 @@ describe('Scope', () => {
 
     test('setLevel', () => {
       const scope = new Scope();
-      scope.setLevel('critical');
-      expect((scope as any)._level).toEqual('critical');
+      scope.setLevel('fatal');
+      expect((scope as any)._level).toEqual('fatal');
     });
 
     test('setTransactionName', () => {
@@ -137,8 +137,8 @@ describe('Scope', () => {
 
     test('chaining', () => {
       const scope = new Scope();
-      scope.setLevel('critical').setUser({ id: '1' });
-      expect((scope as any)._level).toEqual('critical');
+      scope.setLevel('fatal').setUser({ id: '1' });
+      expect((scope as any)._level).toEqual('fatal');
       expect((scope as any)._user).toEqual({ id: '1' });
     });
   });
@@ -296,7 +296,7 @@ describe('Scope', () => {
       const scope = new Scope();
       scope.setLevel('warning');
       const event: Event = {};
-      event.level = 'critical';
+      event.level = 'fatal';
       return scope.applyToEvent(event).then(processedEvent => {
         expect(processedEvent!.level).toEqual('warning');
       });
diff --git a/packages/integration-tests/suites/public-api/captureMessage/with_level/subject.js b/packages/integration-tests/suites/public-api/captureMessage/with_level/subject.js
index 3d7368c95fef..0d12e7115a7e 100644
--- a/packages/integration-tests/suites/public-api/captureMessage/with_level/subject.js
+++ b/packages/integration-tests/suites/public-api/captureMessage/with_level/subject.js
@@ -3,5 +3,4 @@ Sentry.captureMessage('info_message', 'info');
 Sentry.captureMessage('warning_message', 'warning');
 Sentry.captureMessage('error_message', 'error');
 Sentry.captureMessage('fatal_message', 'fatal');
-Sentry.captureMessage('critical_message', 'critical');
 Sentry.captureMessage('log_message', 'log');
diff --git a/packages/integration-tests/suites/public-api/captureMessage/with_level/test.ts b/packages/integration-tests/suites/public-api/captureMessage/with_level/test.ts
index 45eaeca66161..da17ff07a77e 100644
--- a/packages/integration-tests/suites/public-api/captureMessage/with_level/test.ts
+++ b/packages/integration-tests/suites/public-api/captureMessage/with_level/test.ts
@@ -7,7 +7,7 @@ import { getMultipleSentryEnvelopeRequests } from '../../../../utils/helpers';
 sentryTest('should capture with different severity levels', async ({ getLocalTestPath, page }) => {
   const url = await getLocalTestPath({ testDir: __dirname });
 
-  const events = await getMultipleSentryEnvelopeRequests<Event>(page, 7, { url });
+  const events = await getMultipleSentryEnvelopeRequests<Event>(page, 6, { url });
 
   expect(events[0].message).toBe('debug_message');
   expect(events[0].level).toBe('debug');
@@ -24,9 +24,6 @@ sentryTest('should capture with different severity levels', async ({ getLocalTes
   expect(events[4].message).toBe('fatal_message');
   expect(events[4].level).toBe('fatal');
 
-  expect(events[5].message).toBe('critical_message');
-  expect(events[5].level).toBe('critical');
-
-  expect(events[6].message).toBe('log_message');
-  expect(events[6].level).toBe('log');
+  expect(events[5].message).toBe('log_message');
+  expect(events[5].level).toBe('log');
 });
diff --git a/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/scenario.ts b/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/scenario.ts
index 993049500b08..b9ae05edefac 100644
--- a/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/scenario.ts
+++ b/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/scenario.ts
@@ -8,7 +8,7 @@ Sentry.init({
 Sentry.addBreadcrumb({
   category: 'foo',
   message: 'bar',
-  level: 'critical',
+  level: 'fatal',
 });
 
 Sentry.addBreadcrumb({
diff --git a/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/test.ts b/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/test.ts
index c8b894a62102..38ef745cb28e 100644
--- a/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/test.ts
+++ b/packages/node-integration-tests/suites/public-api/addBreadcrumb/multiple_breadcrumbs/test.ts
@@ -10,7 +10,7 @@ test('should add multiple breadcrumbs', async () => {
       {
         category: 'foo',
         message: 'bar',
-        level: 'critical',
+        level: 'fatal',
       },
       {
         category: 'qux',
diff --git a/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/scenario.ts b/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/scenario.ts
index a31b33c68d54..94ebd23dfaa5 100644
--- a/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/scenario.ts
+++ b/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/scenario.ts
@@ -8,7 +8,7 @@ Sentry.init({
 Sentry.addBreadcrumb({
   category: 'foo',
   message: 'bar',
-  level: 'critical',
+  level: 'fatal',
 });
 
 Sentry.captureMessage('test_simple');
diff --git a/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/test.ts b/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/test.ts
index a56f0711e086..d5fc2ef8df73 100644
--- a/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/test.ts
+++ b/packages/node-integration-tests/suites/public-api/addBreadcrumb/simple_breadcrumb/test.ts
@@ -10,7 +10,7 @@ test('should add a simple breadcrumb', async () => {
       {
         category: 'foo',
         message: 'bar',
-        level: 'critical',
+        level: 'fatal',
       },
     ],
   });
diff --git a/packages/node-integration-tests/suites/public-api/captureMessage/with_level/scenario.ts b/packages/node-integration-tests/suites/public-api/captureMessage/with_level/scenario.ts
index 32d46fa171fe..be175d36e816 100644
--- a/packages/node-integration-tests/suites/public-api/captureMessage/with_level/scenario.ts
+++ b/packages/node-integration-tests/suites/public-api/captureMessage/with_level/scenario.ts
@@ -10,5 +10,4 @@ Sentry.captureMessage('info_message', 'info');
 Sentry.captureMessage('warning_message', 'warning');
 Sentry.captureMessage('error_message', 'error');
 Sentry.captureMessage('fatal_message', 'fatal');
-Sentry.captureMessage('critical_message', 'critical');
 Sentry.captureMessage('log_message', 'log');
diff --git a/packages/node-integration-tests/suites/public-api/captureMessage/with_level/test.ts b/packages/node-integration-tests/suites/public-api/captureMessage/with_level/test.ts
index 5db1ef646168..18bd395b148d 100644
--- a/packages/node-integration-tests/suites/public-api/captureMessage/with_level/test.ts
+++ b/packages/node-integration-tests/suites/public-api/captureMessage/with_level/test.ts
@@ -2,7 +2,7 @@ import { assertSentryEvent, getMultipleEnvelopeRequest, runServer } from '../../
 
 test('should capture with different severity levels', async () => {
   const url = await runServer(__dirname);
-  const envelopes = await getMultipleEnvelopeRequest(url, 14);
+  const envelopes = await getMultipleEnvelopeRequest(url, 12);
 
   assertSentryEvent(envelopes[1][2], {
     message: 'debug_message',
@@ -30,11 +30,6 @@ test('should capture with different severity levels', async () => {
   });
 
   assertSentryEvent(envelopes[11][2], {
-    message: 'critical_message',
-    level: 'critical',
-  });
-
-  assertSentryEvent(envelopes[13][2], {
     message: 'log_message',
     level: 'log',
   });
diff --git a/packages/types/src/severity.ts b/packages/types/src/severity.ts
index ad96231cb013..de13f2a02b99 100644
--- a/packages/types/src/severity.ts
+++ b/packages/types/src/severity.ts
@@ -1,6 +1,6 @@
 /**
  * @deprecated Please use a `SeverityLevel` string instead of the `Severity` enum. Acceptable values are 'fatal',
- * 'critical', 'error', 'warning', 'log', 'info', and 'debug'.
+ * 'error', 'warning', 'log', 'info', and 'debug'.
  */
 export enum Severity {
   /** JSDoc */
@@ -15,10 +15,8 @@ export enum Severity {
   Info = 'info',
   /** JSDoc */
   Debug = 'debug',
-  /** JSDoc */
-  Critical = 'critical',
 }
 
 // Note: If this is ever changed, the `validSeverityLevels` array in `@sentry/utils` needs to be changed, also. (See
 // note there for why we can't derive one from the other.)
-export type SeverityLevel = 'fatal' | 'error' | 'warning' | 'log' | 'info' | 'debug' | 'critical';
+export type SeverityLevel = 'fatal' | 'error' | 'warning' | 'log' | 'info' | 'debug';
diff --git a/packages/utils/src/severity.ts b/packages/utils/src/severity.ts
index ba2ad2822851..c40f0c2a6004 100644
--- a/packages/utils/src/severity.ts
+++ b/packages/utils/src/severity.ts
@@ -11,7 +11,7 @@ import { Severity, SeverityLevel } from '@sentry/types';
 // create a circular dependency between `@sentry/types` and `@sentry/utils` (also not good). So a TODO accompanying the
 // type, reminding anyone who changes it to change this list also, will have to do.
 
-export const validSeverityLevels = ['fatal', 'error', 'warning', 'log', 'info', 'debug', 'critical'];
+export const validSeverityLevels = ['fatal', 'error', 'warning', 'log', 'info', 'debug'];
 
 /**
  * Converts a string-based level into a member of the deprecated {@link Severity} enum.