diff --git a/icu4c/source/common/unicode/utext.h b/icu4c/source/common/unicode/utext.h
index c21d636f151..84aeb68afeb 100644
--- a/icu4c/source/common/unicode/utext.h
+++ b/icu4c/source/common/unicode/utext.h
@@ -1163,6 +1163,13 @@ struct UTextFuncs {
      *             Intended for use should the table grow to accomodate added
      *             functions in the future, to allow tests for older format
      *             function tables that do not contain the extensions.
+     *
+     *             Fields are placed for optimal alignment on
+     *             32/64/128-bit-pointer machines, by normally grouping together
+     *             4 32-bit fields,
+     *             4 pointers,
+     *             2 64-bit fields
+     *             in sequence.
      *   @draft ICU 3.6
      */
     int32_t       tableSize;
@@ -1172,7 +1179,7 @@ struct UTextFuncs {
       *              Do not use, reserved for use by the UText framework only.
       *   @internal
       */
-    int32_t       reserved;
+    int32_t       reserved1, reserved2, reserved3;
 
 
     /**
@@ -1266,12 +1273,6 @@ struct UTextFuncs {
       */
     UTextClose  *spare3;
 
-    /**
-      * (private)  Spare function pointer
-      * @internal
-      */
-    UTextClose  *spare4;
-
 };
 typedef struct UTextFuncs UTextFuncs;
 
@@ -1355,6 +1356,12 @@ struct UText {
 
     /* ---- 16 byte alignment boundary------ */
     
+    /**
+     *  (protected) Native index of the first character in the text chunk.
+     *  @draft ICU 3.6
+     */
+    int64_t         chunkNativeStart;
+
     /**
      *  (protected) Current iteration position within the text chunk (UTF-16 buffer).
      *  This is the index to the character that will be returned by utext_next32().
@@ -1368,12 +1375,6 @@ struct UText {
      */
     int32_t         chunkLength;
 
-    /**
-     *  (protected) Native index of the first character in the text chunk.
-     *  @draft ICU 3.6
-     */
-    int64_t         chunkNativeStart;
-
     /* ---- 16  byte alignment boundary-- */
     
 
@@ -1528,9 +1529,9 @@ enum {
                   0,                    /* chunkNativeLimit     */ \
                   0,                    /* extraSize            */ \
                   0,                    /* nativeIndexingLimit  */ \
+                  0,                    /* chunkNativeStart     */ \
                   0,                    /* chunkOffset          */ \
                   0,                    /* chunkLength          */ \
-                  0,                    /* chunkNativeStart     */ \
                   NULL,                 /* chunkContents        */ \
                   NULL,                 /* pFuncs               */ \
                   NULL,                 /* pExtra               */ \
diff --git a/icu4c/source/common/utext.cpp b/icu4c/source/common/utext.cpp
index 5eefb5933d5..da496cd01b0 100644
--- a/icu4c/source/common/utext.cpp
+++ b/icu4c/source/common/utext.cpp
@@ -1584,7 +1584,7 @@ U_CDECL_END
 static struct UTextFuncs utf8Funcs = 
 {
     sizeof(UTextFuncs),
-    0,                  // Reserved alignment padding
+    0, 0, 0,             // Reserved alignment padding
     utf8TextClone,
     utf8TextLength,
     utf8TextAccess,
@@ -1596,8 +1596,7 @@ static struct UTextFuncs utf8Funcs =
     utf8TextClose,
     NULL,                // spare 1
     NULL,                // spare 2
-    NULL,                // spare 3
-    NULL                 // spare 4
+    NULL                 // spare 3
 };
 
 
@@ -1986,7 +1985,7 @@ repTextCopy(UText *ut,
 static struct UTextFuncs repFuncs = 
 {
     sizeof(UTextFuncs),
-    0,                 // Reserved alignment padding
+    0, 0, 0,           // Reserved alignment padding
     repTextClone,
     repTextLength,
     repTextAccess,
@@ -1998,8 +1997,7 @@ static struct UTextFuncs repFuncs =
     repTextClose,
     NULL,              // spare 1
     NULL,              // spare 2
-    NULL,              // spare 3
-    NULL               // spare 4
+    NULL               // spare 3
 };
 
 
@@ -2235,7 +2233,7 @@ unistrTextCopy(UText *ut,
 static struct UTextFuncs unistrFuncs = 
 {
     sizeof(UTextFuncs),
-    0,                   // Reserved alignment padding
+    0, 0, 0,             // Reserved alignment padding
     unistrTextClone,
     unistrTextLength,
     unistrTextAccess,
@@ -2247,8 +2245,7 @@ static struct UTextFuncs unistrFuncs =
     unistrTextClose,
     NULL,                // spare 1
     NULL,                // spare 2
-    NULL,                // spare 3
-    NULL                 // spare 4
+    NULL                 // spare 3
 };
 
 
@@ -2547,7 +2544,7 @@ ucstrTextExtract(UText *ut,
 static struct UTextFuncs ucstrFuncs = 
 {
     sizeof(UTextFuncs),
-    0,                 // Reserved alignment padding
+    0, 0, 0,           // Reserved alignment padding
     ucstrTextClone,
     ucstrTextLength,
     ucstrTextAccess,
@@ -2560,7 +2557,6 @@ static struct UTextFuncs ucstrFuncs =
     NULL,              // spare 1
     NULL,              // spare 2
     NULL,              // spare 3
-    NULL               // spare 4
 };
 
 U_CDECL_END
@@ -2762,20 +2758,19 @@ charIterTextExtract(UText *ut,
 static struct UTextFuncs charIterFuncs = 
 {
     sizeof(UTextFuncs),
-    0,                  // Reserved alignment padding
+    0, 0, 0,             // Reserved alignment padding
     charIterTextClone,
     charIterTextLength,
     charIterTextAccess,
     charIterTextExtract,
-    NULL,              // Replace
-    NULL,              // Copy
-    NULL,              // MapOffsetToNative,
-    NULL,              // MapIndexToUTF16,
+    NULL,                // Replace
+    NULL,                // Copy
+    NULL,                // MapOffsetToNative,
+    NULL,                // MapIndexToUTF16,
     charIterTextClose,
     NULL,                // spare 1
     NULL,                // spare 2
-    NULL,                // spare 3
-    NULL                 // spare 4
+    NULL                 // spare 3
 };
 U_CDECL_END