diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 25cebf193..bd894135e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,11 @@
 Change Log
 ==========
 
+v4.12.0 (UNRELEASED)
+--------------------
+* :star: Added the multiattachment viewer widget to the codebase in alignment with KE-chain-2 backend. (#1434)
+* :+1: dependent versions for development
+
 v4.11.0 (27MAY24)
 -----------------
 * :+1: Added the `ShowScopeMembersOnly` representation on the `UserReferenceProperty`. (#1418)
diff --git a/pykechain/enums.py b/pykechain/enums.py
index ce19a86cc..5e7c92b78 100644
--- a/pykechain/enums.py
+++ b/pykechain/enums.py
@@ -227,6 +227,7 @@ class WidgetNames(Enum):
     :cvar SERVICEWIDGET: serviceWidget
     :cvar NOTEBOOKWIDGET: notebookWidget
     :cvar ATTACHMENTVIEWERWIDGET: attachmentViewerWidget
+    :cvar MULTIATTACHMENTVIEWERWIDGET: multiAttachmentViewerWidget
     :cvar TASKNAVIGATIONBARWIDGET: taskNavigationBarWidget
     :cvar JSONWIDGET: jsonWidget
 
@@ -250,6 +251,7 @@ class WidgetNames(Enum):
     SERVICEWIDGET = "serviceWidget"
     NOTEBOOKWIDGET = "notebookWidget"
     ATTACHMENTVIEWERWIDGET = "attachmentViewerWidget"
+    MULTIATTACHMENTVIEWERWIDGET = "multiAttachmentViewerWidget"
     TASKNAVIGATIONBARWIDGET = "taskNavigationBarWidget"
     JSONWIDGET = "jsonWidget"
     METAPANELWIDGET = "metaPanelWidget"
@@ -279,6 +281,7 @@ class WidgetTypes(Enum):
     :cvar SERVICE: Service widget
     :cvar NOTEBOOK: Notebook widget
     :cvar ATTACHMENTVIEWER: Attachmentviewer widget
+    :cvar MULTIATTACHMENTVIEWER: MultiAttachmentviewer widget
     :cvar TASKNAVIGATIONBAR: Tasknavigationbar widget
     :cvar JSON: Json widget
     :cvar METAPANEL: Metapanel widget
@@ -304,6 +307,7 @@ class WidgetTypes(Enum):
     SERVICE = "SERVICE"
     NOTEBOOK = "NOTEBOOK"
     ATTACHMENTVIEWER = "ATTACHMENTVIEWER"
+    MULTIATTACHMENTVIEWER = "MULTIATTACHMENTVIEWER"
     TASKNAVIGATIONBAR = "TASKNAVIGATIONBAR"
     JSON = "JSON"
     METAPANEL = "METAPANEL"
@@ -330,6 +334,7 @@ class WidgetTypes(Enum):
     WidgetNames.SERVICEWIDGET: WidgetTypes.SERVICE,
     WidgetNames.NOTEBOOKWIDGET: WidgetTypes.NOTEBOOK,
     WidgetNames.ATTACHMENTVIEWERWIDGET: WidgetTypes.ATTACHMENTVIEWER,
+    WidgetNames.MULTIATTACHMENTVIEWERWIDGET: WidgetTypes.MULTIATTACHMENTVIEWER,
     WidgetNames.TASKNAVIGATIONBARWIDGET: WidgetTypes.TASKNAVIGATIONBAR,
     WidgetNames.JSONWIDGET: WidgetTypes.JSON,
     WidgetNames.METAPANELWIDGET: WidgetTypes.METAPANEL,
diff --git a/pykechain/models/widgets/widget_models.py b/pykechain/models/widgets/widget_models.py
index 96db4a9b8..1a293761e 100644
--- a/pykechain/models/widgets/widget_models.py
+++ b/pykechain/models/widgets/widget_models.py
@@ -9,6 +9,7 @@
 # SERVICE
 # NOTEBOOK
 # ATTACHMENTVIEWER
+# MULTIATTACHMENTVIEWER
 # TASKNAVIGATIONBAR
 # JSON
 # METAPANEL
@@ -62,6 +63,10 @@ class AttachmentviewerWidget(Widget):
     """Attachmentviewer Widget."""
 
 
+class MultiAttachmentviewerWidget(Widget):
+    """Multi Attachmentviewer Widget."""
+
+
 class TasknavigationbarWidget(Widget):
     """Tasknavigationbar Widget."""
 
diff --git a/pykechain/models/widgets/widgets_manager.py b/pykechain/models/widgets/widgets_manager.py
index b8c972abd..ec268c342 100644
--- a/pykechain/models/widgets/widgets_manager.py
+++ b/pykechain/models/widgets/widgets_manager.py
@@ -663,8 +663,17 @@ def add_attachmentviewer_widget(
         else:
             kwargs.update({"readable_models": [attachment_model_id]})
 
+        widget_type = WidgetTypes.ATTACHMENTVIEWER
+        # we also use this function to make the MULTI ATTACHMENT VIEWER widget
+        # this can be provided in the kwargs as 'widget_type' argument
+        if (
+            "widget_type" in kwargs
+            and kwargs.get("widget_type") == WidgetTypes.MULTIATTACHMENTVIEWER
+        ):
+            widget_type = kwargs.get("widget_type")
+
         widget = self.create_widget(
-            widget_type=WidgetTypes.ATTACHMENTVIEWER,
+            widget_type=widget_type,
             meta=meta,
             title=title,
             parent=parent_widget,
@@ -673,6 +682,59 @@ def add_attachmentviewer_widget(
 
         return widget
 
+    def add_multiattachmentviewer_widget(
+        self,
+        attachment_property: Union[str, "AttachmentProperty"],
+        editable: Optional[bool] = False,
+        title: TITLE_TYPING = False,
+        parent_widget: Optional[Union[Widget, str]] = None,
+        alignment: Optional[Alignment] = None,
+        image_fit: Optional[Union[ImageFitValue, str]] = ImageFitValue.CONTAIN,
+        show_download_button: Optional[bool] = True,
+        show_full_screen_button: Optional[bool] = True,
+        **kwargs,
+    ) -> Widget:
+        """
+        Add a KE-chain Multi Attachment widget widget manager.
+
+        The widget will be saved to KE-chain.
+
+        :param attachment_property: KE-chain Attachment property to display
+        :type attachment_property: AttachmentProperty
+        :param editable: Whether the attachment can be added, edited or deleted (default: False)
+        :type editable: bool
+        :param title: A custom title for the script widget
+            * False (default): Property name
+            * String value: Custom title
+            * None: No title
+        :type title: bool or basestring or None
+        :param alignment: horizontal alignment of the previewed attachment (Alignment enum class)
+        :type alignment: Alignment
+        :param image_fit: (O) enumeration to address the image_fit (defaults to 'contain', otherwise 'cover')
+        :type image_fit: basestring or None
+        :param show_download_button: (O) whether a user can download the attached figure (defaults to True)
+        :type show_download_button: bool
+        :param show_full_screen_button: (O) whether the figure can be expanded to fit the full screen (defaults to True)
+        :type show_full_screen_button: bool
+        :param kwargs: additional keyword arguments to pass
+        :return: newly created widget
+        :rtype: Widget
+        :raises IllegalArgumentError: when incorrect arguments are provided
+        :raises APIError: When the widget could not be created.
+        """
+        return self.add_attachmentviewer_widget(
+            attachment_property,
+            editable,
+            title,
+            parent_widget,
+            alignment,
+            image_fit,
+            show_download_button,
+            show_full_screen_button,
+            widget_type=WidgetTypes.MULTIATTACHMENTVIEWER,
+            **kwargs,
+        )
+
     def add_tasknavigationbar_widget(
         self,
         activities: Union[Iterable[Dict]],