diff --git a/icu4c/source/i18n/casetrn.cpp b/icu4c/source/i18n/casetrn.cpp
index 39469edb3b1..c7304a93e62 100644
--- a/icu4c/source/i18n/casetrn.cpp
+++ b/icu4c/source/i18n/casetrn.cpp
@@ -84,15 +84,13 @@ UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CaseMapTransliterator)
 /**
  * Constructs a transliterator.
  */
-CaseMapTransliterator::CaseMapTransliterator(const Locale &loc, const UnicodeString &id, UCaseMapFull *map) : 
+CaseMapTransliterator::CaseMapTransliterator(const UnicodeString &id, UCaseMapFull *map) : 
     Transliterator(id, 0),
-    fLoc(loc), fLocName(NULL),
     fCsp(NULL),
     fMap(map)
 {
     UErrorCode errorCode = U_ZERO_ERROR;
     fCsp = ucase_getSingleton(&errorCode); // expect to get NULL if failure
-    fLocName=fLoc.getName();
 
     // TODO test incremental mode with context-sensitive text (e.g. greek sigma)
     // TODO need to call setMaximumContextLength()?!
@@ -109,9 +107,8 @@ CaseMapTransliterator::~CaseMapTransliterator() {
  */
 CaseMapTransliterator::CaseMapTransliterator(const CaseMapTransliterator& o) :
     Transliterator(o),
-    fLoc(o.fLoc), fLocName(NULL), fCsp(o.fCsp), fMap(o.fMap)
+    fCsp(o.fCsp), fMap(o.fMap)
 {
-    fLocName=fLoc.getName();
 }
 
 /**
@@ -119,8 +116,6 @@ CaseMapTransliterator::CaseMapTransliterator(const CaseMapTransliterator& o) :
  */
 CaseMapTransliterator& CaseMapTransliterator::operator=(const CaseMapTransliterator& o) {
     Transliterator::operator=(o);
-    fLoc = o.fLoc;
-    fLocName = fLoc.getName();
     fCsp = o.fCsp;
     fMap = o.fMap;
     return *this;
@@ -160,7 +155,7 @@ void CaseMapTransliterator::handleTransliterate(Replaceable& text,
         c=text.char32At(textPos);
         csc.cpLimit=textPos+=U16_LENGTH(c);
 
-        result=fMap(fCsp, c, utrans_rep_caseContextIterator, &csc, &s, fLocName, &locCache);
+        result=fMap(fCsp, c, utrans_rep_caseContextIterator, &csc, &s, "", &locCache);
 
         if(csc.b1 && isIncremental) {
             // fMap() tried to look beyond the context limit
diff --git a/icu4c/source/i18n/casetrn.h b/icu4c/source/i18n/casetrn.h
index cf3e0f9598b..ba63e7c1831 100644
--- a/icu4c/source/i18n/casetrn.h
+++ b/icu4c/source/i18n/casetrn.h
@@ -24,7 +24,6 @@
 #if !UCONFIG_NO_TRANSLITERATION
 
 #include "unicode/translit.h"
-#include "unicode/locid.h"
 #include "ucase.h"
 
 U_CDECL_BEGIN
@@ -51,7 +50,7 @@ public:
      * @param id  the transliterator ID.
      * @param map the full case mapping function (see ucase.h)
      */
-    CaseMapTransliterator(const Locale &loc, const UnicodeString &id, UCaseMapFull *map);
+    CaseMapTransliterator(const UnicodeString &id, UCaseMapFull *map);
 
     /**
      * Destructor.
@@ -98,8 +97,6 @@ protected:
                                      UTransPosition& offsets, 
                                      UBool isIncremental) const;
 
-    Locale fLoc;
-    const char *fLocName;
     UCaseProps *fCsp;
     UCaseMapFull *fMap;
 };
diff --git a/icu4c/source/i18n/titletrn.cpp b/icu4c/source/i18n/titletrn.cpp
index dd3375b9003..9125e5d3f14 100644
--- a/icu4c/source/i18n/titletrn.cpp
+++ b/icu4c/source/i18n/titletrn.cpp
@@ -24,8 +24,8 @@ U_NAMESPACE_BEGIN
 
 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(TitlecaseTransliterator)
 
-TitlecaseTransliterator::TitlecaseTransliterator(const Locale& theLoc) :
-    CaseMapTransliterator(theLoc, UNICODE_STRING("Any-Title", 9), NULL)
+TitlecaseTransliterator::TitlecaseTransliterator() :
+    CaseMapTransliterator(UNICODE_STRING("Any-Title", 9), NULL)
 {
     // Need to look back 2 characters in the case of "can't"
     setMaximumContextLength(2);
@@ -125,9 +125,9 @@ void TitlecaseTransliterator::handleTransliterate(
         type=ucase_getTypeOrIgnorable(fCsp, c);
         if(type>=0) { // not case-ignorable
             if(doTitle) {
-                result=ucase_toFullTitle(fCsp, c, utrans_rep_caseContextIterator, &csc, &s, fLocName, &locCache);
+                result=ucase_toFullTitle(fCsp, c, utrans_rep_caseContextIterator, &csc, &s, "", &locCache);
             } else {
-                result=ucase_toFullLower(fCsp, c, utrans_rep_caseContextIterator, &csc, &s, fLocName, &locCache);
+                result=ucase_toFullLower(fCsp, c, utrans_rep_caseContextIterator, &csc, &s, "", &locCache);
             }
             doTitle = (UBool)(type==0); // doTitle=isUncased
 
diff --git a/icu4c/source/i18n/titletrn.h b/icu4c/source/i18n/titletrn.h
index b8c67d6ec58..8493e54d8db 100644
--- a/icu4c/source/i18n/titletrn.h
+++ b/icu4c/source/i18n/titletrn.h
@@ -15,7 +15,6 @@
 #if !UCONFIG_NO_TRANSLITERATION
 
 #include "unicode/translit.h"
-#include "unicode/locid.h"
 #include "ucase.h"
 #include "casetrn.h"
 
@@ -35,7 +34,7 @@ class U_I18N_API TitlecaseTransliterator : public CaseMapTransliterator {
      * Constructs a transliterator.
      * @param loc the given locale.
      */
-    TitlecaseTransliterator(const Locale& loc = Locale::getDefault());
+    TitlecaseTransliterator();
 
     /**
      * Destructor.
diff --git a/icu4c/source/i18n/tolowtrn.cpp b/icu4c/source/i18n/tolowtrn.cpp
index 6eab680c604..267ce406d35 100644
--- a/icu4c/source/i18n/tolowtrn.cpp
+++ b/icu4c/source/i18n/tolowtrn.cpp
@@ -25,8 +25,8 @@ UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LowercaseTransliterator)
 /**
  * Constructs a transliterator.
  */
-LowercaseTransliterator::LowercaseTransliterator(const Locale& theLoc) : 
-    CaseMapTransliterator(theLoc, UNICODE_STRING("Any-Lower", 9), ucase_toFullLower)
+LowercaseTransliterator::LowercaseTransliterator() : 
+    CaseMapTransliterator(UNICODE_STRING("Any-Lower", 9), ucase_toFullLower)
 {
 }
 
diff --git a/icu4c/source/i18n/tolowtrn.h b/icu4c/source/i18n/tolowtrn.h
index c5bccc03116..6fd3d51ad8c 100644
--- a/icu4c/source/i18n/tolowtrn.h
+++ b/icu4c/source/i18n/tolowtrn.h
@@ -15,7 +15,6 @@
 #if !UCONFIG_NO_TRANSLITERATION
 
 #include "unicode/translit.h"
-#include "unicode/locid.h"
 #include "casetrn.h"
 
 U_NAMESPACE_BEGIN
@@ -33,7 +32,7 @@ class U_I18N_API LowercaseTransliterator : public CaseMapTransliterator {
      * Constructs a transliterator.
      * @param loc the given locale.
      */
-    LowercaseTransliterator(const Locale& loc = Locale::getDefault());
+    LowercaseTransliterator();
 
     /**
      * Destructor.
diff --git a/icu4c/source/i18n/toupptrn.cpp b/icu4c/source/i18n/toupptrn.cpp
index 3d099da240c..0678c36073c 100644
--- a/icu4c/source/i18n/toupptrn.cpp
+++ b/icu4c/source/i18n/toupptrn.cpp
@@ -25,8 +25,8 @@ UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UppercaseTransliterator)
 /**
  * Constructs a transliterator.
  */
-UppercaseTransliterator::UppercaseTransliterator(const Locale& theLoc) :
-    CaseMapTransliterator(theLoc, UNICODE_STRING("Any-Upper", 9), ucase_toFullUpper)
+UppercaseTransliterator::UppercaseTransliterator() :
+    CaseMapTransliterator(UNICODE_STRING("Any-Upper", 9), ucase_toFullUpper)
 {
 }
 
diff --git a/icu4c/source/i18n/toupptrn.h b/icu4c/source/i18n/toupptrn.h
index d1796832cda..18a501c7480 100644
--- a/icu4c/source/i18n/toupptrn.h
+++ b/icu4c/source/i18n/toupptrn.h
@@ -15,7 +15,6 @@
 #if !UCONFIG_NO_TRANSLITERATION
 
 #include "unicode/translit.h"
-#include "unicode/locid.h"
 #include "casetrn.h"
 
 U_NAMESPACE_BEGIN
@@ -33,7 +32,7 @@ class U_I18N_API UppercaseTransliterator : public CaseMapTransliterator {
      * Constructs a transliterator.
      * @param loc the given locale.
      */
-    UppercaseTransliterator(const Locale& loc = Locale::getDefault());
+    UppercaseTransliterator();
 
     /**
      * Destructor.