diff --git a/js/src/Makefile.in b/js/src/Makefile.in
index 01ee687e43bc..80806b254c35 100644
--- a/js/src/Makefile.in
+++ b/js/src/Makefile.in
@@ -563,7 +563,6 @@ endif
 default::
 
 ifneq (,$(CROSS_COMPILE)$(filter-out WINNT OS2,$(OS_ARCH)))
-ifneq ($(OS_ARCH),SYMBIAN)
 # nsinstall doesn't get built until we enter config/ in the exports phase,
 # so we'll have to manually ensure it gets built here if we want to use
 # $(EXPORTS)
@@ -573,7 +572,6 @@ $(PUBLIC) $(SDK_PUBLIC): config/nsinstall$(HOST_BIN_SUFFIX)
 config/nsinstall$(HOST_BIN_SUFFIX): $(srcdir)/config/nsinstall.c $(srcdir)/config/pathsub.c
 	$(MAKE) -C config/ nsinstall$(HOST_BIN_SUFFIX)
 endif
-endif
 
 include $(topsrcdir)/config/rules.mk
 
diff --git a/js/src/configure.in b/js/src/configure.in
index 55a06a47f622..7ee0053208bf 100644
--- a/js/src/configure.in
+++ b/js/src/configure.in
@@ -501,40 +501,6 @@ if test "$target" != "$host"; then
         ;;
     esac
 
-    case "$target" in
-    *symbian*)
-        AC_ARG_WITH(symbian-sdk,
-        [  --with-symbian-sdk=SYMBIAN_SDK_DIR
-                          The path to the Symbian SDK],
-        SYMBIAN_SDK_DIR=$withval)
-
-        OS_EXE_CFLAGS="$OS_EXE_CFLAGS -D__EXE__"
-        CFLAGS="-MD -nostdinc"
-        SYMBIAN_SYS_INCLUDE="-I$SYMBIAN_SDK_DIR/Epoc32/include -I$SYMBIAN_SDK_DIR/Epoc32/include/variant -I$SYMBIAN_SDK_DIR/Epoc32/include/stdapis"
-
-        case "$target" in
-        *-symbianelf)
-            OS_TARGET=GCCE
-            CC=arm-none-symbianelf-gcc.exe
-            CXX=arm-none-symbianelf-g++.exe
-            LD=arm-none-symbianelf-ld.exe
-            AR=arm-none-symbianelf-ar.exe
-            CPP=arm-none-symbianelf-cpp.exe
-            CFLAGS="$CFLAGS -c -Wall -Wno-unknown-pragmas -fexceptions -march=armv5t -mapcs -pipe -msoft-float"
-            CXXFLAGS="$CFLAGS -Wno-ctor-dtor-privacy"
-            GCCE_INCLUDE="-include $SYMBIAN_SDK_DIR/EPOC32/INCLUDE/GCCE/GCCE.h -D__PRODUCT_INCLUDE__=$SYMBIAN_SDK_DIR/Epoc32/include/variant/Symbian_OS_v9.2.hrh"
-            CFLAGS="$CFLAGS ${GCCE_INCLUDE} -x c"
-            CXXFLAGS="$CXXFLAGS ${GCCE_INCLUDE} -x c++"
-            CPPFLAGS="$CPPFLAGS ${SYMBIAN_SYS_INCLUDE}"
-            ;;
-        *-symbianwinscw)
-            dnl TODO: add emulator build code
-            OS_TARGET=WINSCW
-            ;;
-        esac
-        ;;
-    esac
-
     AC_CHECK_PROGS(CC, $CC "${target_alias}-gcc" "${target}-gcc", :)
     unset ac_cv_prog_CC
     AC_PROG_CC
@@ -2055,33 +2021,6 @@ ia64*-hpux*)
         MC=mc.exe
     fi
     ;;
-*-symbian*)
-
-    AC_DEFINE(XP_UNIX)
-    AC_DEFINE(SYMBIAN)
-    AC_DEFINE(__arm__)
-    AC_DEFINE(__SYMBIAN32__)
-    AC_DEFINE(_UNICODE)
-    AC_DEFINE(NDEBUG)
-    AC_DEFINE(__SUPPORT_CPP_EXCEPTIONS__)
-    AC_DEFINE(MOZ_STDERR_TO_STDOUT)
-    AC_DEFINE(HAVE_FCNTL_FILE_LOCKING)
-    AC_DEFINE(HAVE_SOCKLEN_T)
-    AC_DEFINE(__GCCE__)
-
-    CPU_ARCH=ARM
-    OS_RELEASE=9.2
-    OS_ARCH=SYMBIAN
-    USE_PTHREADS=1
-    LIB_SUFFIX=lib
-    DLL_SUFFIX=dll
-    MKSHLIB=
-    DSO_LDOPTS=
-    DSO_CFLAGS=
-    VISIBILITY_FLAGS=
-    TARGET_NSPR_MDCPUCFG='\"md/_symbian.cfg\"'
-    RANLIB='echo no ranlib '
-;;
 
 *-mingw*)
     DSO_CFLAGS=
@@ -5065,10 +5004,6 @@ case "$target" in
 *-mingw*)
     NO_EDITLINE=1
     ;;
-*-symbian*)
-    NO_EDITLINE=1
-    JS_DISABLE_SHELL=1
-    ;;
 *)
     ;;
 esac
diff --git a/js/src/jstypes.h b/js/src/jstypes.h
index 8ff593ed620c..994e5bd2e1ab 100644
--- a/js/src/jstypes.h
+++ b/js/src/jstypes.h
@@ -88,13 +88,6 @@
 # define JS_EXTERN_DATA(__type) extern __declspec(dllexport) __type
 # define JS_EXPORT_DATA(__type) __declspec(dllexport) __type
 
-#elif defined(__SYMBIAN32__)
-
-# define JS_EXTERN_API(__type) extern EXPORT_C __type
-# define JS_EXPORT_API(__type) EXPORT_C __type
-# define JS_EXTERN_DATA(__type) extern EXPORT_C __type
-# define JS_EXPORT_DATA(__type) EXPORT_C __type
-
 #else /* Unix */
 
 # ifdef HAVE_VISIBILITY_ATTRIBUTE
@@ -131,8 +124,6 @@
 # endif
 #elif defined(XP_OS2)
 # define JS_IMPORT_API(__x)     __declspec(dllimport) __x
-#elif defined(__SYMBIAN32__)
-# define JS_IMPORT_API(__x)     IMPORT_C __x
 #else
 # define JS_IMPORT_API(__x)     JS_EXPORT_API (__x)
 #endif
@@ -141,12 +132,6 @@
 # define JS_IMPORT_DATA(__x)      __declspec(dllimport) __x
 #elif defined(XP_OS2)
 # define JS_IMPORT_DATA(__x)      __declspec(dllimport) __x
-#elif defined(__SYMBIAN32__)
-# if defined(__CW32__)
-#   define JS_IMPORT_DATA(__x)    __declspec(dllimport) __x
-# else
-#   define JS_IMPORT_DATA(__x)    IMPORT_C __x
-# endif
 #else
 # define JS_IMPORT_DATA(__x)     JS_EXPORT_DATA (__x)
 #endif
diff --git a/js/src/xpconnect/shell/xpcshell.cpp b/js/src/xpconnect/shell/xpcshell.cpp
index aa7034f828bc..9025466cced6 100644
--- a/js/src/xpconnect/shell/xpcshell.cpp
+++ b/js/src/xpconnect/shell/xpcshell.cpp
@@ -86,9 +86,6 @@
 #ifdef XP_WIN
 #include <windows.h>
 #endif
-#ifdef __SYMBIAN32__
-#include <unistd.h>
-#endif
 
 #include "nsIScriptSecurityManager.h"
 #include "nsIPrincipal.h"
diff --git a/netwerk/protocol/file/nsFileProtocolHandler.cpp b/netwerk/protocol/file/nsFileProtocolHandler.cpp
index f3b1c57275d9..5ca21ff72c69 100644
--- a/netwerk/protocol/file/nsFileProtocolHandler.cpp
+++ b/netwerk/protocol/file/nsFileProtocolHandler.cpp
@@ -187,7 +187,7 @@ nsFileProtocolHandler::ReadURLFile(nsIFile* aFile, nsIURI** aURI)
     return rv;
 }
 
-#elif defined(XP_UNIX) && !defined(__SYMBIAN32__)
+#elif defined(XP_UNIX)
 NS_IMETHODIMP
 nsFileProtocolHandler::ReadURLFile(nsIFile* aFile, nsIURI** aURI)
 {