diff --git a/command-snapshot.json b/command-snapshot.json
index 35d96ab5..88e5c7cc 100644
--- a/command-snapshot.json
+++ b/command-snapshot.json
@@ -3,5 +3,10 @@
     "command": "env:connect",
     "plugin": "@salesforce/plugin-env",
     "flags": ["client-id", "instance-url", "jwt-key-file", "username"]
+  },
+  {
+    "command": "env:list",
+    "plugin": "@salesforce/plugin-env",
+    "flags": ["all"]
   }
 ]
diff --git a/messages/list.md b/messages/list.md
new file mode 100644
index 00000000..e69de29b
diff --git a/src/commands/env/list.ts b/src/commands/env/list.ts
new file mode 100644
index 00000000..72b76ec1
--- /dev/null
+++ b/src/commands/env/list.ts
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2021, salesforce.com, inc.
+ * All rights reserved.
+ * Licensed under the BSD 3-Clause license.
+ * For full license text, see LICENSE.txt file in the repo root or https://opensource.org/licenses/BSD-3-Clause
+ */
+
+import { EOL } from 'os';
+
+import { Command, flags } from '@oclif/command';
+import { cli, Table } from 'cli-ux';
+import { AuthInfo, Authorization, SfdxError } from '@salesforce/core';
+
+// TODO: add back once md messages are supported
+// Messages.importMessagesDirectory(__dirname);
+// const messages = Messages.loadMessages('@salesforce/plugin-env', 'list');
+
+export default class EnvList extends Command {
+  // TODO: add back once md messages are supported
+  // public static readonly description = messages.getMessage('description');
+  // public static readonly examples = messages.getMessage('examples').split(EOL);
+  public static readonly description = 'list environments';
+  public static readonly examples = 'sf env list\nsf env list --all'.split(EOL);
+  public static flags = {
+    all: flags.boolean({
+      char: 'a',
+      description: "show all environments regardless of whether they're connected or not",
+    }),
+    ...cli.table.flags(),
+  };
+
+  public flags: {
+    all: boolean;
+  };
+
+  public async run(): Promise<Authorization[]> {
+    this.flags = this.parse(EnvList).flags;
+
+    let authorizations: Authorization[];
+
+    try {
+      if (await AuthInfo.hasAuthentications()) {
+        authorizations = await AuthInfo.listAllAuthorizations();
+        const hasErrors = authorizations.filter((auth) => !!auth.error).length > 0;
+        const columns = {
+          alias: {
+            get: (row) => row.alias ?? '',
+          },
+          username: {},
+          orgId: {
+            header: 'Org ID',
+          },
+          instanceUrl: {
+            header: 'Instance URL',
+          },
+          oauthMethod: {
+            header: 'OAuth Method',
+          },
+        } as Table.table.Columns<Partial<Authorization>>;
+        if (hasErrors) {
+          columns.error = {
+            // eslint-disable-next-line @typescript-eslint/no-unsafe-return, @typescript-eslint/no-unsafe-member-access
+            get: (row) => row.error ?? '',
+          } as Table.table.Columns<Partial<Authorization>>;
+        }
+        cli.styledHeader('Authenticated Envs');
+        cli.table(authorizations, columns, this.flags);
+      } else {
+        throw new SfdxError('There are no authorizations available.');
+      }
+    } catch (error) {
+      const err = error as SfdxError;
+      // TODO: add back once md messages are supported
+      // cli.log(messages.getMessage('noResultsFound'));
+      cli.error(err);
+    }
+
+    return authorizations;
+  }
+}