diff --git a/README.md b/README.md
index 53943ae..18f75bf 100644
--- a/README.md
+++ b/README.md
@@ -160,6 +160,16 @@ Use `active` argument to show only the active profile.
 nmcli.connection.show(name: str, show_secrets: bool = False, active: bool = False) -> ConnectionDetails
 ```
 
+#### nmcli.connection.show_all
+
+Show all connections.
+
+Use `active` argument to show only active connections.
+
+```
+nmcli.connection.show_all(active: bool = False) -> List[Connection]
+```
+
 #### nmcli.connection.reload
 
 Reload all connection files from disk.
diff --git a/nmcli/_connection.py b/nmcli/_connection.py
index e581bc7..032c117 100644
--- a/nmcli/_connection.py
+++ b/nmcli/_connection.py
@@ -34,6 +34,9 @@ def down(self, name: str, wait: int = None) -> None:
     def show(self, name: str, show_secrets: bool = False, active: bool = False) -> ConnectionDetails:
         raise NotImplementedError
 
+    def show_all(self, active: bool = False) -> List[Connection]:
+        raise NotImplementedError
+
     def reload(self) -> None:
         raise NotImplementedError
 
@@ -104,5 +107,17 @@ def show(self, name: str, show_secrets: bool = False, active: bool = False) -> C
                 results[key] = None if value in ('--', '""') else value
         return results
 
+    def show_all(self, active: bool = False) -> List[Connection]:
+        cmd = ['connection', 'show']
+        if active:
+            cmd += ['--active']
+        r = self._syscmd.nmcli(cmd)
+        results = []
+        for row in r.split('\n')[1:]:
+            if len(row) == 0:
+                continue
+            results.append(Connection.parse(row))
+        return results
+
     def reload(self) -> None:
         self._syscmd.nmcli(['connection', 'reload'])
diff --git a/nmcli/dummy/_connection.py b/nmcli/dummy/_connection.py
index 124cb7a..9cd95fe 100644
--- a/nmcli/dummy/_connection.py
+++ b/nmcli/dummy/_connection.py
@@ -31,6 +31,10 @@ def down_args(self):
     def show_args(self):
         return self._show_args
 
+    @property
+    def show_all_args(self):
+        return self._show_all_args
+
     @property
     def called_reload(self) -> int:
         return self._called_reload
@@ -38,16 +42,19 @@ def called_reload(self) -> int:
     def __init__(self,
                  result_call: List[Connection] = None,
                  result_show: ConnectionDetails = None,
+                 result_show_all: List[Connection] = None,
                  raise_error: Exception = None):
         self._raise_error = raise_error
         self._result_call = result_call or []
         self._result_show = result_show
+        self._result_show_all = result_show_all or []
         self._add_args: List[Tuple] = []
         self._modify_args: List[Tuple] = []
         self._delete_args: List[Tuple] = []
         self._up_args: List[Tuple] = []
         self._down_args: List[Tuple] = []
         self._show_args: List[Tuple] = []
+        self._show_all_args: List[Tuple] = []
         self._called_reload = 0
 
     def __call__(self) -> List[Connection]:
@@ -86,6 +93,11 @@ def show(self, name: str, show_secrets: bool = False, active: bool = False) -> C
             return self._result_show
         raise ValueError("'result_show' is not properly initialized")
 
+    def show_all(self, active: bool = False) -> List[Connection]:
+        self._raise_error_if_needed()
+        self._show_all_args.append((active,))
+        return self._result_show_all
+
     def reload(self) -> None:
         self._raise_error_if_needed()
         self._called_reload += 1
diff --git a/tests/dummy/test_connection.py b/tests/dummy/test_connection.py
index 5300cfa..5a3848c 100644
--- a/tests/dummy/test_connection.py
+++ b/tests/dummy/test_connection.py
@@ -134,6 +134,28 @@ def test_show_when_no_arguments_are_passed():
         c.show('MyHome')
 
 
+def test_show_all():
+    result_show_all = [
+        Connection('AP1', '3eac760c-de77-4823-9ab8-773c276daca3',
+                   'wifi', 'wlan0'),
+        Connection('Home', '700f5b18-cbb3-4d38-9c61-e3bc3a3852b9',
+                   'ethernet', 'eth0')
+    ]
+    c = DummyConnectionControl(result_show_all=result_show_all)
+
+    assert c.show_all() == result_show_all
+    assert c.show_all_args[0] == (False,)
+
+    c.show_all(active=True)
+    assert c.show_all_args[1] == (True,)
+
+
+def test_show_all_when_raise_error():
+    c = DummyConnectionControl(raise_error=Exception)
+    with pytest.raises(Exception):
+        c.show_all()
+
+
 def test_reload():
     c = DummyConnectionControl()
     c.reload()
diff --git a/tests/test_connection.py b/tests/test_connection.py
index 6b13bf5..5f6fb07 100644
--- a/tests/test_connection.py
+++ b/tests/test_connection.py
@@ -132,6 +132,28 @@ def test_show():
         'connection', 'show', "--active", name]
 
 
+def test_show_all():
+    s = DummySystemCommand('''NAME            UUID                                  TYPE      DEVICE
+AP1  3eac760c-de77-4823-9ab8-773c276daca3  wifi      wlan0
+Home            700f5b18-cbb3-4d38-9c61-e3bc3a3852b9  ethernet  eth0
+Wired connection 1  700f5b18-cbb3-4d38-9c61-999999999999  ethernet  eth1''')
+    connection = ConnectionControl(s)
+
+    r = connection.show_all()
+    assert s.passed_parameters == ['connection', 'show']
+    assert r == [
+        Connection('AP1', '3eac760c-de77-4823-9ab8-773c276daca3',
+                   'wifi', 'wlan0'),
+        Connection('Home', '700f5b18-cbb3-4d38-9c61-e3bc3a3852b9',
+                   'ethernet', 'eth0'),
+        Connection('Wired connection 1',
+                   '700f5b18-cbb3-4d38-9c61-999999999999', 'ethernet', 'eth1')
+    ]
+
+    connection.show_all(active=True)
+    assert s.passed_parameters == ['connection', 'show', '--active']
+
+
 def test_reload():
     s = DummySystemCommand()
     connection = ConnectionControl(s)