diff --git a/src/company_gui.h b/src/company_gui.h
new file mode 100644
--- /dev/null
+++ b/src/company_gui.h
@@ -0,0 +1,20 @@
+/* $Id$ */
+
+/** @file company_gui.h GUI Functions related to companies. */
+
+#ifndef COMPANY_GUI_H
+#define COMPANY_GUI_H
+
+#include "company_type.h"
+
+uint16 GetDrawStringCompanyColor(CompanyID company);
+void DrawCompanyIcon(CompanyID p, int x, int y);
+
+void ShowCompanyStations(CompanyID company);
+void ShowCompanyFinances(CompanyID company);
+void ShowCompany(CompanyID company);
+
+void InvalidateCompanyWindows(const Company *c);
+void DeleteCompanyWindows(CompanyID company);
+
+#endif /* COMPANY_GUI_H */