diff --git a/plugins/layout_replicator/__init__.py b/plugins/layout_replicator/__init__.py
index ef6d345..9240046 100644
--- a/plugins/layout_replicator/__init__.py
+++ b/plugins/layout_replicator/__init__.py
@@ -2,6 +2,8 @@ import pcbnew
 import wx
 import traceback
 
+from .via_net_assign import Via_Net_Assign_Action
+
 
 # ---------------------------------------------------------------------------
 # Board helpers
@@ -241,3 +243,4 @@ class Layout_Replicator_Action(pcbnew.ActionPlugin):
 			dlg.Destroy()
 
 Layout_Replicator_Action().register()
+Via_Net_Assign_Action().register()
diff --git a/plugins/layout_replicator/via_net_assign.py b/plugins/layout_replicator/via_net_assign.py
new file mode 100644
index 0000000..98f2208
--- /dev/null
+++ b/plugins/layout_replicator/via_net_assign.py
@@ -0,0 +1,121 @@
+import pcbnew
+import wx
+import math
+import traceback
+
+
+# ---------------------------------------------------------------------------
+# Geometry
+# ---------------------------------------------------------------------------
+
+def _point_to_segment_dist(px, py, ax, ay, bx, by):
+	dx, dy = bx - ax, by - ay
+	if dx == 0 and dy == 0:
+		return math.hypot(px - ax, py - ay)
+	t = max(0.0, min(1.0, ((px - ax) * dx + (py - ay) * dy) / (dx * dx + dy * dy)))
+	return math.hypot(px - (ax + t * dx), py - (ay + t * dy))
+
+
+# ---------------------------------------------------------------------------
+# Logic
+# ---------------------------------------------------------------------------
+
+def _build_candidates(board):
+	"""Collect all non-via tracks and pads that have a real net."""
+	candidates = []
+
+	for track in board.GetTracks():
+		if track.GetClass() == 'PCB_VIA':
+			continue
+		net = track.GetNet()
+		if net and net.GetNetCode() != 0:
+			candidates.append(('track', track, net))
+
+	for pad in board.GetPads():
+		net = pad.GetNet()
+		if net and net.GetNetCode() != 0:
+			candidates.append(('pad', pad, net))
+
+	return candidates
+
+
+def _nearest_net(via, candidates):
+	vx = via.GetX()
+	vy = via.GetY()
+	vr = via.GetWidth() / 2
+
+	best_net = None
+	best_dist = None
+
+	for kind, item, net in candidates:
+		if kind == 'track':
+			ax, ay = item.GetStart().x, item.GetStart().y
+			bx, by = item.GetEnd().x, item.GetEnd().y
+			hw = item.GetWidth() / 2
+			dist = max(0.0, _point_to_segment_dist(vx, vy, ax, ay, bx, by) - hw - vr)
+		else:  # pad
+			dist = max(0.0, math.hypot(vx - item.GetX(), vy - item.GetY()) - vr)
+
+		if best_dist is None or dist < best_dist:
+			best_dist = dist
+			best_net = net
+
+	return best_net, best_dist
+
+
+def assign_via_nets(board):
+	vias = [t for t in board.GetTracks()
+	        if t.GetClass() == 'PCB_VIA' and t.IsSelected()]
+
+	if not vias:
+		return 0, 'No vias in selection.'
+
+	candidates = _build_candidates(board)
+	if not candidates:
+		return 0, 'No routed copper found on board.'
+
+	count = 0
+	for via in vias:
+		net, _ = _nearest_net(via, candidates)
+		if net is not None:
+			via.SetNet(net)
+			count += 1
+
+	pcbnew.Refresh()
+	return count, None
+
+
+# ---------------------------------------------------------------------------
+# Plugin
+# ---------------------------------------------------------------------------
+
+class Via_Net_Assign_Action(pcbnew.ActionPlugin):
+	def defaults(self):
+		self.name = 'Assign Via Nets from Nearest Copper'
+		self.category = 'Placement'
+		self.description = 'Update net assignment of all selected vias to match the nearest copper item'
+		self.show_toolbar_button = True
+		self.icon_file_name = ''
+
+	def Run(self):
+		try:
+			board = pcbnew.GetBoard()
+			count, err = assign_via_nets(board)
+			if err:
+				wx.MessageBox(err, 'Via Net Assign', wx.OK | wx.ICON_INFORMATION)
+			else:
+				wx.MessageBox(f'{count} via(s) updated.', 'Via Net Assign', wx.OK | wx.ICON_INFORMATION)
+		except Exception:
+			msg = traceback.format_exc()
+			dlg = wx.Dialog(None, title='Via Net Assign — Error', size=(520, 320),
+			                style=wx.DEFAULT_DIALOG_STYLE | wx.RESIZE_BORDER)
+			s = wx.BoxSizer(wx.VERTICAL)
+			txt = wx.TextCtrl(dlg, value=msg, style=wx.TE_MULTILINE | wx.TE_READONLY | wx.HSCROLL)
+			txt.SetFont(wx.Font(9, wx.FONTFAMILY_TELETYPE, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_NORMAL))
+			s.Add(txt, 1, wx.EXPAND | wx.ALL, 6)
+			btn = wx.Button(dlg, wx.ID_CLOSE, 'Close')
+			btn.Bind(wx.EVT_BUTTON, lambda e: dlg.Close())
+			s.Add(btn, 0, wx.ALIGN_RIGHT | wx.ALL, 6)
+			dlg.SetSizer(s)
+			dlg.ShowModal()
+			dlg.Destroy()