diff --git a/icu4c/source/test/intltest/apicoll.cpp b/icu4c/source/test/intltest/apicoll.cpp
index 9c6756c6144..89c463e1223 100644
--- a/icu4c/source/test/intltest/apicoll.cpp
+++ b/icu4c/source/test/intltest/apicoll.cpp
@@ -106,7 +106,7 @@ CollationAPITest::TestProperty(/* char* par */)
 
     logln("The property tests begin : ");
     logln("Test ctors : ");
-    col = Collator::createInstance(success);
+    col = Collator::createInstance(Locale::ENGLISH, success);
 
     if (U_FAILURE(success))
     {
@@ -207,7 +207,7 @@ CollationAPITest::TestProperty(/* char* par */)
     }
 
     delete col;
-    col = Collator::createInstance(success);
+    col = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success))
     {
         errln("Creating default collator failed.");
@@ -259,7 +259,7 @@ CollationAPITest::TestHashCode(/* char* par */)
     logln("hashCode tests begin.");
     UErrorCode success = U_ZERO_ERROR;
     Collator *col1 = 0;
-    col1 = Collator::createInstance(success);
+    col1 = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success))
     {
         errln("Default collation creation failed.");
@@ -276,7 +276,7 @@ CollationAPITest::TestHashCode(/* char* par */)
     }
 
     Collator *col3 = 0;
-    col3 = Collator::createInstance(success);
+    col3 = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success))
     {
         errln("2nd default collation creation failed.");
@@ -304,7 +304,7 @@ CollationAPITest::TestCollationKey(/* char* par */)
     logln("testing CollationKey begins...");
     Collator *col = 0;
     UErrorCode success=U_ZERO_ERROR;
-    col = Collator::createInstance(success);
+    col = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success))
     {
         errln("Default collation creation failed.");
@@ -388,7 +388,7 @@ CollationAPITest::TestElemIter(/* char* par */)
     logln("testing sortkey begins...");
     Collator *col = 0;
     UErrorCode success = U_ZERO_ERROR;
-    col = Collator::createInstance(success);
+    col = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success))
     {
         errln("Default collation creation failed.");
@@ -396,7 +396,7 @@ CollationAPITest::TestElemIter(/* char* par */)
     }
        
     UnicodeString testString1("XFILE What subset of all possible test cases has the highest probability of detecting the most errors?");
-    UnicodeString testString2("Xf ile What subset of all possible test cases has the lowest probability of detecting the least errors?");
+    UnicodeString testString2("Xf_ile What subset of all possible test cases has the lowest probability of detecting the least errors?");
     logln("Constructors and comparison testing....");
     CollationElementIterator *iterator1 = ((RuleBasedCollator*)col)->createCollationElementIterator(testString1);
     
@@ -459,8 +459,8 @@ CollationAPITest::TestElemIter(/* char* par */)
 
     order1 = iterator1->next(success); 
     order3 = iterator3->next(success);
-    doAssert((CollationElementIterator::secondaryOrder(order1) == 
-        CollationElementIterator::secondaryOrder(order3)), "The secondary orders should be the same");
+    doAssert((CollationElementIterator::secondaryOrder(order1) != 
+        CollationElementIterator::secondaryOrder(order3)), "The secondary orders should not be the same");
     doAssert((order1 != CollationElementIterator::NULLORDER), "Unexpected end of iterator reached");
 
     iterator1->reset(); iterator2->reset(); iterator3->reset();
@@ -516,8 +516,8 @@ CollationAPITest::TestElemIter(/* char* par */)
         return;
     }
 
-    doAssert((CollationElementIterator::secondaryOrder(order1) == 
-        CollationElementIterator::secondaryOrder(order3)), "The secondary orders should be the same");
+    doAssert((CollationElementIterator::secondaryOrder(order1) != 
+        CollationElementIterator::secondaryOrder(order3)), "The secondary orders should not be the same");
     doAssert((order1 != CollationElementIterator::NULLORDER), "Unexpected end of iterator reached");
     doAssert((*iterator2 != *iterator3), "The iterators should be different");
 
@@ -525,7 +525,7 @@ CollationAPITest::TestElemIter(/* char* par */)
     //test error values
     success=U_UNSUPPORTED_ERROR;
     Collator *colerror=NULL;
-    colerror=Collator::createInstance(success);
+    colerror=Collator::createInstance(Locale::ENGLISH, success);
     if (colerror != 0 || success == U_ZERO_ERROR){
         errln("Error: createInstance(UErrorCode != U_ZERO_ERROR) should just return and not create an instance\n");
     }
@@ -580,7 +580,7 @@ CollationAPITest::TestOperators(/* char* par */)
     doAssert((*col1 == *col2), "Collator objects not equal after assignment (operator=)");
         
     success = U_ZERO_ERROR;
-    Collator *col3 = Collator::createInstance(success);
+    Collator *col3 = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success)) {
         errln("Default collation creation failed.");
         return;
@@ -642,7 +642,7 @@ void
 CollationAPITest::TestDuplicate(/* char* par */)
 {
     UErrorCode status = U_ZERO_ERROR;
-    Collator *col1 = Collator::createInstance(status);
+    Collator *col1 = Collator::createInstance(Locale::ENGLISH, status);
     if (U_FAILURE(status)) {
         logln("Default collator creation failed.");
         return;
@@ -665,7 +665,7 @@ CollationAPITest::TestCompare(/* char* par */)
     logln("The compare tests begin : ");
     Collator *col = 0;
     UErrorCode success = U_ZERO_ERROR;
-    col = Collator::createInstance(success);
+    col = Collator::createInstance(Locale::ENGLISH, success);
     if (U_FAILURE(success)) {
         errln("Default collation creation failed.");
         return;
diff --git a/icu4c/source/test/intltest/g7coll.cpp b/icu4c/source/test/intltest/g7coll.cpp
index 59a957e6418..0a16c93bf7a 100644
--- a/icu4c/source/test/intltest/g7coll.cpp
+++ b/icu4c/source/test/intltest/g7coll.cpp
@@ -180,7 +180,7 @@ void G7CollationTest::TestDemo1(/* char* par */)
 {
     logln("Demo Test 1 : Create a new table collation with rules \"& Z < p, P\"");
     UErrorCode status = U_ZERO_ERROR;
-    Collator *col = Collator::createInstance(status);
+    Collator *col = Collator::createInstance("en_US", status);
     const UnicodeString baseRules = ((RuleBasedCollator*)col)->getRules();
     UnicodeString newRules(" & Z < p, P");
     newRules.insert(0, baseRules);
@@ -209,7 +209,7 @@ void G7CollationTest::TestDemo2(/* char* par */)
 {
     logln("Demo Test 2 : Create a new table collation with rules \"& C < ch , cH, Ch, CH\"");
     UErrorCode status = U_ZERO_ERROR;
-    Collator *col = Collator::createInstance(status);
+    Collator *col = Collator::createInstance("en_US", status);
     const UnicodeString baseRules = ((RuleBasedCollator*)col)->getRules();
     UnicodeString newRules("& C < ch , cH, Ch, CH");
     newRules.insert(0, baseRules);
@@ -238,7 +238,7 @@ void G7CollationTest::TestDemo3(/* char* par */)
 {
     logln("Demo Test 3 : Create a new table collation with rules \"& Question'-'mark ; '?' & Hash'-'mark ; '#' & Ampersand ; '&'\"");
     UErrorCode status = U_ZERO_ERROR;
-    Collator *col = Collator::createInstance(status);
+    Collator *col = Collator::createInstance("en_US", status);
     const UnicodeString baseRules = ((RuleBasedCollator*)col)->getRules();
     UnicodeString newRules = "& Question'-'mark ; '?' & Hash'-'mark ; '#' & Ampersand ; '&'";
     newRules.insert(0, baseRules);
@@ -267,7 +267,7 @@ void G7CollationTest::TestDemo4(/* char* par */)
 {
     logln("Demo Test 4 : Create a new table collation with rules \" & aa ; a'-' & ee ; e'-' & ii ; i'-' & oo ; o'-' & uu ; u'-' \"");
     UErrorCode status = U_ZERO_ERROR;
-    Collator *col = Collator::createInstance(status);
+    Collator *col = Collator::createInstance("en_US", status);
     const UnicodeString baseRules = ((RuleBasedCollator*)col)->getRules();
     UnicodeString newRules = " & aa ; a'-' & ee ; e'-' & ii ; i'-' & oo ; o'-' & uu ; u'-' ";
     newRules.insert(0, baseRules);
diff --git a/icu4c/source/test/intltest/mnkytst.cpp b/icu4c/source/test/intltest/mnkytst.cpp
index 560c47c3214..0353aec8141 100644
--- a/icu4c/source/test/intltest/mnkytst.cpp
+++ b/icu4c/source/test/intltest/mnkytst.cpp
@@ -44,7 +44,7 @@ CollationMonkeyTest::CollationMonkeyTest()
 : myCollator(0)
 {
     UErrorCode status = U_ZERO_ERROR;
-    myCollator = Collator::createInstance(status);
+    myCollator = Collator::createInstance("en_US", status);
 }
 
 CollationMonkeyTest::~CollationMonkeyTest()
@@ -229,7 +229,7 @@ void CollationMonkeyTest::TestRules(/* char* par */){
     int i=0;
     logln("Demo Test 1 : Create a new table collation with rules \"& z < 0x00e4\"");
     UErrorCode status = U_ZERO_ERROR;
-    Collator *col = Collator::createInstance(status);
+    Collator *col = Collator::createInstance("en_US", status);
     const UnicodeString baseRules = ((RuleBasedCollator*)col)->getRules();
     UnicodeString newRules(" & z < ");
     newRules.append((UChar)0x00e4);
diff --git a/icu4c/source/test/intltest/regcoll.cpp b/icu4c/source/test/intltest/regcoll.cpp
index 2df5c4951d0..6daa68a48ec 100644
--- a/icu4c/source/test/intltest/regcoll.cpp
+++ b/icu4c/source/test/intltest/regcoll.cpp
@@ -31,7 +31,7 @@
 static UErrorCode status = U_ZERO_ERROR;
 
 const UnicodeString CollationRegressionTest::test1 = "XFILE What subset of all possible test cases has the highest probability of detecting the most errors?";
-const UnicodeString CollationRegressionTest::test2 = "Xf ile What subset of all possible test cases has the lowest probability of detecting the least errors?";
+const UnicodeString CollationRegressionTest::test2 = "Xf_ile What subset of all possible test cases has the lowest probability of detecting the least errors?";
 const UChar chars3[] = {0x61, 0x00FC, 0x62, 0x65, 0x63, 0x6b, 0x20, 0x47, 0x72, 0x00F6, 0x00DF, 0x65, 0x20, 0x4c, 0x00FC, 0x62, 0x63, 0x6b, 0};
 const UnicodeString CollationRegressionTest::test3(chars3);
 
@@ -242,7 +242,7 @@ void CollationRegressionTest::Test4058613(/* char* par */)
 
     Collator *c = NULL;
     
-    c = Collator::createInstance(status);
+    c = Collator::createInstance("en_US", status);
 
     if (c == NULL || U_FAILURE(status))
     {
diff --git a/icu4c/source/test/intltest/tscoll.cpp b/icu4c/source/test/intltest/tscoll.cpp
index b4acc921702..3ec471569cb 100644
--- a/icu4c/source/test/intltest/tscoll.cpp
+++ b/icu4c/source/test/intltest/tscoll.cpp
@@ -130,12 +130,9 @@ void IntlTestCollator::runIndexedTest( int32_t index, UBool exec, const char* &n
         if (exec)
         {
             logln("CollationKanatest---");
-            logln("Temporary removed");
-
-            /*
+            
             CollationKanaTest test;
             callTest( test, par );
-            */
         }
         break;
 
@@ -207,12 +204,9 @@ void IntlTestCollator::runIndexedTest( int32_t index, UBool exec, const char* &n
         if (exec)
         {
             logln("CollationRegressionTest---");
-            logln("Temporary removed");
-
-            /*
+            
             CollationRegressionTest test;
             callTest( test, par );
-            */
         }
         break;
 
@@ -236,10 +230,8 @@ void IntlTestCollator::runIndexedTest( int32_t index, UBool exec, const char* &n
         {
             logln("CollationIteratorTest---");
             
-            /*
             CollationIteratorTest test;
             callTest( test, par );
-            */
         }
         break;