diff --git a/icu4c/source/data/misc/metaZones.txt b/icu4c/source/data/misc/metaZones.txt
index 9e5ea1d30ac..c080c2e5f79 100644
--- a/icu4c/source/data/misc/metaZones.txt
+++ b/icu4c/source/data/misc/metaZones.txt
@@ -896,6 +896,11 @@ metaZones:table(nofallback){
             {
                 "Africa_Eastern",
                 "2000-01-15 10:00",
+                "2021-01-31 21:00",
+            }
+            {
+                "Africa_Central",
+                "2021-01-31 21:00",
                 "9999-12-31 23:59",
             }
         }
diff --git a/icu4c/source/data/misc/windowsZones.txt b/icu4c/source/data/misc/windowsZones.txt
index 4fe43fd3597..1d87eaa2ab5 100644
--- a/icu4c/source/data/misc/windowsZones.txt
+++ b/icu4c/source/data/misc/windowsZones.txt
@@ -213,7 +213,6 @@ windowsZones:table(nofallback){
             KM{"Indian/Comoro"}
             MG{"Indian/Antananarivo"}
             SO{"Africa/Mogadishu"}
-            SS{"Africa/Juba"}
             TZ{"Africa/Dar_es_Salaam"}
             UG{"Africa/Kampala"}
             YT{"Indian/Mayotte"}
@@ -610,6 +609,7 @@ windowsZones:table(nofallback){
             MW{"Africa/Blantyre"}
             MZ{"Africa/Maputo"}
             RW{"Africa/Kigali"}
+            SS{"Africa/Juba"}
             SZ{"Africa/Mbabane"}
             ZA{"Africa/Johannesburg"}
             ZM{"Africa/Lusaka"}
diff --git a/icu4c/source/data/misc/zoneinfo64.txt b/icu4c/source/data/misc/zoneinfo64.txt
index baccda734b7..eb30d6eee38 100644
--- a/icu4c/source/data/misc/zoneinfo64.txt
+++ b/icu4c/source/data/misc/zoneinfo64.txt
@@ -3,9 +3,9 @@
 // License & terms of use: http://www.unicode.org/copyright.html
 //---------------------------------------------------------
 // Build tool:  tz2icu
-// Build date:  Mon Jan  4 23:38:49 2021
+// Build date:  Tue Jan 26 10:05:10 2021
 // tz database: ftp://ftp.iana.org/tz/
-// tz version:  2020f
+// tz version:  2021a
 // ICU version: 68.2
 //---------------------------------------------------------
 // >> !!! >>   THIS IS A MACHINE-GENERATED FILE   << !!! <<
@@ -13,7 +13,7 @@
 //---------------------------------------------------------
 
 zoneinfo64:table(nofallback) {
- TZVersion { "2020f" }
+ TZVersion { "2021a" }
  Zones:array { 
   /* ACT */ :int { 356 } //Z#0
   /* AET */ :int { 368 } //Z#1
@@ -95,9 +95,9 @@ zoneinfo64:table(nofallback) {
     links:intvector { 30, 44, 45 }
   } //Z#30
   /* Africa/Juba */ :table {
-    trans:intvector { -1230775588, 10360800, 24786000, 41810400, 56322000, 73432800, 87944400, 104882400, 119480400, 136332000, 151016400, 167781600, 182552400, 199231200, 214174800, 230680800, 245710800, 262735200, 277246800, 294184800, 308782800, 325634400, 340405200, 357084000, 371941200, 388533600, 403477200, 419983200, 435013200, 452037600, 466635600, 483487200, 498171600, 947930400 }
+    trans:intvector { -1230775588, 10360800, 24786000, 41810400, 56322000, 73432800, 87944400, 104882400, 119480400, 136332000, 151016400, 167781600, 182552400, 199231200, 214174800, 230680800, 245710800, 262735200, 277246800, 294184800, 308782800, 325634400, 340405200, 357084000, 371941200, 388533600, 403477200, 419983200, 435013200, 452037600, 466635600, 483487200, 498171600, 947930400, 1612126800 }
     typeOffsets:intvector { 7588, 0, 7200, 0, 7200, 3600, 10800, 0 }
-    typeMap:bin { "01020102010201020102010201020102010201020102010201020102010201020103" }
+    typeMap:bin { "0102010201020102010201020102010201020102010201020102010201020102010301" }
   } //Z#31
   /* Africa/Kampala */ :int { 48 } //Z#32
   /* Africa/Khartoum */ :table {
diff --git a/icu4j/main/shared/data/icutzdata.jar b/icu4j/main/shared/data/icutzdata.jar
index 8b80100a820..1020e4b6a80 100644
--- a/icu4j/main/shared/data/icutzdata.jar
+++ b/icu4j/main/shared/data/icutzdata.jar
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:6ae4e00ad4101373226842c53ffda26ba476dfd3487926b2c20a5117f386417c
-size 95066
+oid sha256:b111cd4ab31c64de1c37fc7a7237f9bd5538469b86aaa3a75e5e24ffa20a81a8
+size 95086