diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index e56aa77abd2..1d893d4d8ae 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -496,3 +496,4 @@ erpnext.patches.v16_0.rename_ar_ap_ageing_filter
 erpnext.patches.v16_0.fix_subcontracting_titles
 erpnext.patches.v16_0.backfill_repost_accounting_ledger_status
 erpnext.patches.v16_0.merge_seeded_item_group_root
+erpnext.patches.v16_0.rename_italy_customer_name_fields
diff --git a/erpnext/patches/v16_0/rename_italy_customer_name_fields.py b/erpnext/patches/v16_0/rename_italy_customer_name_fields.py
new file mode 100644
index 00000000000..4e1b13a947b
--- /dev/null
+++ b/erpnext/patches/v16_0/rename_italy_customer_name_fields.py
@@ -0,0 +1,53 @@
+import frappe
+
+RENAMED_FIELDS = {
+	"first_name": "italy_customer_first_name",
+	"last_name": "italy_customer_last_name",
+}
+
+
+def execute():
+	"""Rename Italy's Customer name fields, which clash with the standard quick-entry
+	first_name/last_name fields, and restore any Italy custom field columns that a
+	previously interrupted fixture run left missing."""
+	if not has_italy_fixtures():
+		return
+
+	duplicate_fieldnames = [
+		fieldname for fieldname in RENAMED_FIELDS if frappe.db.exists("Custom Field", f"Customer-{fieldname}")
+	]
+
+	from erpnext.regional.italy.setup import get_custom_fields, make_custom_fields
+
+	make_custom_fields()
+	for doctype in get_custom_fields():
+		frappe.clear_cache(doctype=doctype)
+		frappe.db.updatedb(doctype)
+
+	for old_fieldname, new_fieldname in RENAMED_FIELDS.items():
+		copy_customer_names(old_fieldname, new_fieldname)
+
+	for old_fieldname in duplicate_fieldnames:
+		frappe.delete_doc("Custom Field", f"Customer-{old_fieldname}", force=True)
+
+	if duplicate_fieldnames:
+		frappe.clear_cache(doctype="Customer")
+
+
+def has_italy_fixtures():
+	return bool(
+		frappe.db.exists("Company", {"country": "Italy"})
+		or frappe.db.exists("Custom Field", "Company-fiscal_regime")
+	)
+
+
+def copy_customer_names(old_fieldname, new_fieldname):
+	customer = frappe.qb.DocType("Customer")
+	old_column = customer[old_fieldname]
+	new_column = customer[new_fieldname]
+	(
+		frappe.qb.update(customer)
+		.set(new_column, old_column)
+		.where(old_column.isnotnull() & (old_column != ""))
+		.where(new_column.isnull() | (new_column == ""))
+	).run()
diff --git a/erpnext/regional/italy/e-invoice.xml b/erpnext/regional/italy/e-invoice.xml
index ef1e94ff27b..713e85a556e 100644
--- a/erpnext/regional/italy/e-invoice.xml
+++ b/erpnext/regional/italy/e-invoice.xml
@@ -99,8 +99,8 @@
         {%- if doc.customer_data.customer_type == "Individual" %}
           <CodiceFiscale>{{ doc.customer_data.fiscal_code }}</CodiceFiscale>
           <Anagrafica>
-            <Nome>{{ doc.customer_data.first_name }}</Nome>
-            <Cognome>{{ doc.customer_data.last_name }}</Cognome>
+            <Nome>{{ doc.customer_data.italy_customer_first_name }}</Nome>
+            <Cognome>{{ doc.customer_data.italy_customer_last_name }}</Cognome>
           </Anagrafica>
         {%- else %}
           <IdFiscaleIVA>
diff --git a/erpnext/regional/italy/setup.py b/erpnext/regional/italy/setup.py
index 9f9115ca12d..a21be948650 100644
--- a/erpnext/regional/italy/setup.py
+++ b/erpnext/regional/italy/setup.py
@@ -23,6 +23,10 @@ def setup(company=None, patch=True):
 
 
 def make_custom_fields(update=True):
+	create_custom_fields(get_custom_fields(), ignore_validate=frappe.flags.in_patch, update=update)
+
+
+def get_custom_fields():
 	invoice_item_fields = [
 		dict(
 			fieldname="tax_rate",
@@ -96,7 +100,7 @@ def make_custom_fields(update=True):
 		),
 	]
 
-	custom_fields = {
+	return {
 		"Company": [
 			dict(
 				fieldname="sb_e_invoicing",
@@ -232,18 +236,18 @@ def make_custom_fields(update=True):
 				depends_on='eval:doc.customer_type=="Company"',
 			),
 			dict(
-				fieldname="first_name",
+				fieldname="italy_customer_first_name",
 				label="First Name",
 				fieldtype="Data",
-				insert_after="salutation",
+				insert_after="customer_type",
 				print_hide=1,
 				depends_on='eval:doc.customer_type!="Company"',
 			),
 			dict(
-				fieldname="last_name",
+				fieldname="italy_customer_last_name",
 				label="Last Name",
 				fieldtype="Data",
-				insert_after="first_name",
+				insert_after="italy_customer_first_name",
 				print_hide=1,
 				depends_on='eval:doc.customer_type!="Company"',
 			),
@@ -461,8 +465,6 @@ def make_custom_fields(update=True):
 		],
 	}
 
-	create_custom_fields(custom_fields, ignore_validate=frappe.flags.in_patch, update=update)
-
 
 def setup_report():
 	report_name = "Electronic Invoice Register"