diff --git a/adminfront/src/features/tenants/routes/TenantListPage.tsx b/adminfront/src/features/tenants/routes/TenantListPage.tsx
index 7963f81c..4b7b712c 100644
--- a/adminfront/src/features/tenants/routes/TenantListPage.tsx
+++ b/adminfront/src/features/tenants/routes/TenantListPage.tsx
@@ -13,6 +13,7 @@ import {
   CardHeader,
   CardTitle,
 } from "../../../components/ui/card";
+import { OrgChartUploadModal } from "../components/OrgChartUploadModal";
 import {
   Table,
   TableBody,
@@ -100,6 +101,9 @@ function TenantListPage() {
 
   const tenants = query.data?.items ?? [];
 
+  // [New] Find a primary COMPANY_GROUP tenant to act as the root for matrix org charts
+  const rootTenant = tenants.find((t) => t.type === "COMPANY_GROUP") || tenants[0];
+
   const handleDelete = (tenantId: string, tenantName: string) => {
     if (
       !window.confirm(
@@ -130,6 +134,16 @@ function TenantListPage() {
           </p>
         </div>
         <div className="flex items-center gap-2">
+          {/* [New] Add Upload Modal to global list page, visible to Super Admin */}
+          <RoleGuard roles={["super_admin"]}>
+            {rootTenant && (
+              <OrgChartUploadModal
+                tenantId={rootTenant.id}
+                onSuccess={() => query.refetch()}
+              />
+            )}
+          </RoleGuard>
+
           <Button
             variant="outline"
             onClick={() => query.refetch()}
diff --git a/backend/internal/service/org_chart_service.go b/backend/internal/service/org_chart_service.go
index 560f0055..3c5082d8 100644
--- a/backend/internal/service/org_chart_service.go
+++ b/backend/internal/service/org_chart_service.go
@@ -115,41 +115,51 @@ func (s *orgChartService) ImportCSV(ctx context.Context, tenantID string, r io.R
 			continue
 		}
 
-		// 1. Process Hierarchy (Build path from multiple columns)
-		var parts []string
+		// Extract domain from email
+		parts := strings.Split(email, "@")
+		domainName := ""
+		if len(parts) == 2 {
+			domainName = parts[1]
+		}
+
+		// 1. Ensure Company Tenant Exists (The Core Requirement)
+		companySlug := s.generateCompanySlug(companyName)
+		companyTenantID, err := s.ensureCompanyTenant(ctx, tenantID, companyName, companySlug, domainName, pathCache)
+		if err != nil {
+			slog.Error("Failed to ensure company tenant", "company", companyName, "error", err)
+			continue
+		}
+
+		// 2. Process Hierarchy (Build path from multiple columns under the Company)
+		var orgParts []string
 		for _, idx := range hierarchyIdx {
 			val := strings.TrimSpace(record[idx])
 			if val != "" && val != "-" {
-				parts = append(parts, val)
+				orgParts = append(orgParts, val)
 			}
 		}
-		orgPath := strings.Join(parts, "/")
+		orgPath := strings.Join(orgParts, "/")
 
-		leafID := tenantID // Default to root
+		leafID := companyTenantID // Default to company tenant
 		if orgPath != "" {
-			leafID, err = s.ensureOrgPath(ctx, tenantID, orgPath, pathCache)
+			leafID, err = s.ensureOrgPath(ctx, companyTenantID, orgPath, pathCache)
 			if err != nil {
 				slog.Error("Failed to ensure hierarchy", "path", orgPath, "error", err)
 				continue
 			}
 		}
 
-		// 2. Ensure User exists in Kratos (Auto-create if missing)
+		// 3. Ensure User exists in Kratos (Auto-create if missing)
 		kratosID, err := s.kratos.FindIdentityIDByIdentifier(ctx, email)
 		if err != nil || kratosID == "" {
 			slog.Info("User not found in Kratos, auto-creating...", "email", email)
 			
-			// Map company name to slug (Simple mapping for now)
-			companyCode := strings.ToLower(companyName)
-			if companyCode == "한맥" { companyCode = "hanmac" }
-			if companyCode == "삼안" { companyCode = "saman" }
-
 			brokerUser := &domain.BrokerUser{
 				Email: email,
 				Name:  name,
 				Attributes: map[string]interface{}{
 					"affiliationType": "AFFILIATE",
-					"companyCode":     companyCode,
+					"companyCode":     companySlug,
 					"department":      orgPath,
 					"grade":           "member",
 				},
@@ -163,11 +173,7 @@ func (s *orgChartService) ImportCSV(ctx context.Context, tenantID string, r io.R
 			kratosID = newID
 		}
 
-		// 3. Update User in Local DB
-		companyCode := strings.ToLower(companyName)
-		if companyCode == "한맥" { companyCode = "hanmac" }
-		if companyCode == "삼안" { companyCode = "saman" }
-
+		// 4. Update User in Local DB (Bind to Company Tenant)
 		user := &domain.User{
 			ID:              kratosID,
 			Email:           email,
@@ -175,8 +181,8 @@ func (s *orgChartService) ImportCSV(ctx context.Context, tenantID string, r io.R
 			Position:        position,
 			JobTitle:        jobTitle,
 			Department:      orgPath,
-			TenantID:        &leafID,
-			CompanyCode:     companyCode,
+			TenantID:        &companyTenantID, // 편입: 사용자의 메인 소속은 회사(COMPANY)
+			CompanyCode:     companySlug,
 			AffiliationType: "AFFILIATE",
 			Status:          "active",
 			UpdatedAt:       time.Now(),
@@ -187,18 +193,29 @@ func (s *orgChartService) ImportCSV(ctx context.Context, tenantID string, r io.R
 			continue
 		}
 
-		// 4. Sync Membership to Keto
+		// 5. Sync Membership to Keto
 		if s.ketoOutboxRepo != nil {
-			// Add as member of the specific unit
+			// Add as member of the Company Tenant
 			_ = s.ketoOutboxRepo.Create(ctx, &domain.KetoOutbox{
 				Namespace: "Tenant",
-				Object:    leafID,
+				Object:    companyTenantID,
 				Relation:  "members",
 				Subject:   "User:" + kratosID,
 				Action:    domain.KetoOutboxActionCreate,
 			})
 
-			// If owner/leader, assign owner role
+			// Add as member of the specific Department unit (if exists)
+			if leafID != companyTenantID {
+				_ = s.ketoOutboxRepo.Create(ctx, &domain.KetoOutbox{
+					Namespace: "Tenant",
+					Object:    leafID,
+					Relation:  "members",
+					Subject:   "User:" + kratosID,
+					Action:    domain.KetoOutboxActionCreate,
+				})
+			}
+
+			// If owner/leader, assign owner role to the leaf unit
 			if isOwner {
 				_ = s.ketoOutboxRepo.Create(ctx, &domain.KetoOutbox{
 					Namespace: "Tenant",
@@ -214,6 +231,79 @@ func (s *orgChartService) ImportCSV(ctx context.Context, tenantID string, r io.R
 	return nil
 }
 
+// [New] Maps korean names to official slugs
+func (s *orgChartService) generateCompanySlug(name string) string {
+	n := strings.ToLower(strings.TrimSpace(name))
+	if strings.Contains(n, "한맥") || strings.Contains(n, "hanmac") {
+		return "hanmac"
+	}
+	if strings.Contains(n, "삼안") || strings.Contains(n, "saman") {
+		return "saman"
+	}
+	if strings.Contains(n, "장헌") || strings.Contains(n, "jangheon") {
+		return "jangheon"
+	}
+	if strings.Contains(n, "평화") || strings.Contains(n, "ptc") {
+		return "ptc"
+	}
+	if strings.Contains(n, "바론") || strings.Contains(n, "baron") {
+		return "baron"
+	}
+	if strings.Contains(n, "한라") || strings.Contains(n, "halla") {
+		return "halla"
+	}
+	// Fallback for unknown companies
+	return "comp-" + uuid.NewString()[:8]
+}
+
+// [New] Ensures the COMPANY tenant exists and binds the domain
+func (s *orgChartService) ensureCompanyTenant(ctx context.Context, rootTenantID, name, slug, domainName string, cache map[string]string) (string, error) {
+	cacheKey := "company:" + slug
+	if id, ok := cache[cacheKey]; ok {
+		return id, nil
+	}
+
+	tenant, err := s.tenantRepo.FindBySlug(ctx, slug)
+	if err != nil && !strings.Contains(err.Error(), "record not found") {
+		return "", err
+	}
+
+	if tenant == nil {
+		// Auto-create missing company tenant
+		slog.Info("Auto-creating missing company tenant", "name", name, "slug", slug)
+		tenant = &domain.Tenant{
+			ID:       uuid.NewString(),
+			Name:     name,
+			Slug:     slug,
+			Type:     domain.TenantTypeCompany,
+			Status:   domain.TenantStatusActive,
+			ParentID: &rootTenantID, // Bind to the root COMPANY_GROUP
+		}
+		if err := s.tenantRepo.Create(ctx, tenant); err != nil {
+			return "", err
+		}
+
+		// Sync hierarchy to Keto (Company belongs to Group)
+		if s.ketoOutboxRepo != nil {
+			_ = s.ketoOutboxRepo.Create(ctx, &domain.KetoOutbox{
+				Namespace: "Tenant",
+				Object:    tenant.ID,
+				Relation:  "parents",
+				Subject:   "Tenant:" + rootTenantID,
+				Action:    domain.KetoOutboxActionCreate,
+			})
+		}
+	}
+
+	// Ensure the email domain is registered to this company
+	if domainName != "" {
+		_ = s.tenantRepo.AddDomain(ctx, tenant.ID, domainName, true)
+	}
+
+	cache[cacheKey] = tenant.ID
+	return tenant.ID, nil
+}
+
 func (s *orgChartService) ensureOrgPath(ctx context.Context, rootTenantID string, path string, cache map[string]string) (string, error) {
 	parts := strings.Split(path, "/")
 	currentParentID := rootTenantID