diff --git a/luni/src/main/java/libcore/io/ForwardingOs.java b/luni/src/main/java/libcore/io/ForwardingOs.java
index ce88a3b..f141694 100644
--- a/luni/src/main/java/libcore/io/ForwardingOs.java
+++ b/luni/src/main/java/libcore/io/ForwardingOs.java
@@ -91,7 +91,6 @@
     public int getegid() { return os.getegid(); }
     public int geteuid() { return os.geteuid(); }
     public int getgid() { return os.getgid(); }
-    public int[] getgroups() throws ErrnoException { return os.getgroups(); }
     public String getenv(String name) { return os.getenv(name); }
     public String getnameinfo(InetAddress address, int flags) throws GaiException { return os.getnameinfo(address, flags); }
     public SocketAddress getpeername(FileDescriptor fd) throws ErrnoException { return os.getpeername(fd); }
@@ -162,7 +161,6 @@
     public void setenv(String name, String value, boolean overwrite) throws ErrnoException { os.setenv(name, value, overwrite); }
     public void seteuid(int euid) throws ErrnoException { os.seteuid(euid); }
     public void setgid(int gid) throws ErrnoException { os.setgid(gid); }
-    public void setgroups(int[] gids) throws ErrnoException { os.setgroups(gids); }
     public void setpgid(int pid, int pgid) throws ErrnoException { os.setpgid(pid, pgid); }
     public void setregid(int rgid, int egid) throws ErrnoException { os.setregid(rgid, egid); }
     public void setreuid(int ruid, int euid) throws ErrnoException { os.setreuid(ruid, euid); }
diff --git a/luni/src/main/java/libcore/io/Linux.java b/luni/src/main/java/libcore/io/Linux.java
index de3b103..807e5a2 100644
--- a/luni/src/main/java/libcore/io/Linux.java
+++ b/luni/src/main/java/libcore/io/Linux.java
@@ -82,7 +82,6 @@
     public native int getegid();
     public native int geteuid();
     public native int getgid();
-    public native int[] getgroups() throws ErrnoException;
     public native String getenv(String name);
     public native String getnameinfo(InetAddress address, int flags) throws GaiException;
     public native SocketAddress getpeername(FileDescriptor fd) throws ErrnoException;
@@ -236,7 +235,6 @@
     public native void setenv(String name, String value, boolean overwrite) throws ErrnoException;
     public native void seteuid(int euid) throws ErrnoException;
     public native void setgid(int gid) throws ErrnoException;
-    public native void setgroups(int[] gids) throws ErrnoException;
     public native void setpgid(int pid, int pgid) throws ErrnoException;
     public native void setregid(int rgid, int egid) throws ErrnoException;
     public native void setreuid(int ruid, int euid) throws ErrnoException;
diff --git a/luni/src/main/java/libcore/io/Os.java b/luni/src/main/java/libcore/io/Os.java
index 194851f..61584b4 100644
--- a/luni/src/main/java/libcore/io/Os.java
+++ b/luni/src/main/java/libcore/io/Os.java
@@ -76,10 +76,6 @@
     public int getegid();
     public int geteuid();
     public int getgid();
-    /* Should the number of groups change during the execution of this call, the call may
-       return an arbitrary subset. This may be worth reconsidering should this be exposed
-       as public API. */
-    public int[] getgroups() throws ErrnoException;
     public String getenv(String name);
     /* TODO: break into getnameinfoHost and getnameinfoService? */
     public String getnameinfo(InetAddress address, int flags) throws GaiException;
@@ -152,7 +148,6 @@
     public void setenv(String name, String value, boolean overwrite) throws ErrnoException;
     public void seteuid(int euid) throws ErrnoException;
     public void setgid(int gid) throws ErrnoException;
-    public void setgroups(int[] gids) throws ErrnoException;
     public void setpgid(int pid, int pgid) throws ErrnoException;
     public void setregid(int rgid, int egid) throws ErrnoException;
     public void setreuid(int ruid, int euid) throws ErrnoException;
diff --git a/luni/src/main/native/libcore_io_Linux.cpp b/luni/src/main/native/libcore_io_Linux.cpp
index 04954b9..30da35c 100644
--- a/luni/src/main/native/libcore_io_Linux.cpp
+++ b/luni/src/main/native/libcore_io_Linux.cpp
@@ -19,7 +19,6 @@
 #include <arpa/inet.h>
 #include <errno.h>
 #include <fcntl.h>
-#include <grp.h>
 #include <ifaddrs.h>
 #include <linux/rtnetlink.h>
 #include <net/if.h>
@@ -1322,24 +1321,6 @@
     return getgid();
 }
 
-static jintArray Linux_getgroups(JNIEnv* env, jobject) {
-    int ngrps = throwIfMinusOne(env, "getgroups", getgroups(0, nullptr));
-    if (ngrps == -1) {
-        return NULL;
-    }
-    std::vector<gid_t> groups(ngrps, 0);
-    ngrps = throwIfMinusOne(env, "getgroups", getgroups(ngrps, &groups[0]));
-    if (ngrps == -1) {
-        return NULL;
-    }
-    jintArray out = env->NewIntArray(ngrps);
-    if ((out != NULL) && (ngrps > 0)) {
-      env->SetIntArrayRegion(out, 0, ngrps, reinterpret_cast<int*>(&groups[0]));
-    }
-
-    return out;
-}
-
 static jstring Linux_getenv(JNIEnv* env, jobject, jstring javaName) {
     ScopedUtfChars name(env, javaName);
     if (name.c_str() == NULL) {
@@ -2179,13 +2160,6 @@
     throwIfMinusOne(env, "setgid", TEMP_FAILURE_RETRY(setgid(gid)));
 }
 
-static void Linux_setgroups(JNIEnv* env, jobject, jintArray gids) {
-    size_t ngrps = gids == NULL ? 0 : env->GetArrayLength(gids);
-    std::vector<gid_t> groups(ngrps, 0);
-    env->GetIntArrayRegion(gids, 0, ngrps, reinterpret_cast<int*>(&groups[0]));
-    throwIfMinusOne(env, "setgroups", setgroups(ngrps, &groups[0]));
-}
-
 static void Linux_setpgid(JNIEnv* env, jobject, jint pid, int pgid) {
     throwIfMinusOne(env, "setpgid", TEMP_FAILURE_RETRY(setpgid(pid, pgid)));
 }
@@ -2524,7 +2498,6 @@
     NATIVE_METHOD(Linux, getegid, "()I"),
     NATIVE_METHOD(Linux, geteuid, "()I"),
     NATIVE_METHOD(Linux, getgid, "()I"),
-    NATIVE_METHOD(Linux, getgroups, "()[I"),
     NATIVE_METHOD(Linux, getenv, "(Ljava/lang/String;)Ljava/lang/String;"),
     NATIVE_METHOD(Linux, getnameinfo, "(Ljava/net/InetAddress;I)Ljava/lang/String;"),
     NATIVE_METHOD(Linux, getpeername, "(Ljava/io/FileDescriptor;)Ljava/net/SocketAddress;"),
@@ -2590,7 +2563,6 @@
     NATIVE_METHOD(Linux, setenv, "(Ljava/lang/String;Ljava/lang/String;Z)V"),
     NATIVE_METHOD(Linux, seteuid, "(I)V"),
     NATIVE_METHOD(Linux, setgid, "(I)V"),
-    NATIVE_METHOD(Linux, setgroups, "([I)V"),
     NATIVE_METHOD(Linux, setpgid, "(II)V"),
     NATIVE_METHOD(Linux, setregid, "(II)V"),
     NATIVE_METHOD(Linux, setreuid, "(II)V"),
diff --git a/luni/src/test/java/libcore/libcore/io/OsTest.java b/luni/src/test/java/libcore/libcore/io/OsTest.java
index cc2c81c..ab8f16e 100644
--- a/luni/src/test/java/libcore/libcore/io/OsTest.java
+++ b/luni/src/test/java/libcore/libcore/io/OsTest.java
@@ -926,20 +926,6 @@
     return f;
   }
 
-  public void test_getgroups() throws Exception {
-    int[] gids = Libcore.os.getgroups();
-    assertNotNull(gids);
-  }
-
-  public void test_setgroups() throws Exception {
-    try {
-      Libcore.os.setgroups(new int[] {-1});
-      fail();
-    } catch (ErrnoException expected) {
-      assertEquals(EPERM, expected.errno);
-    }
-  }
-
   public void test_odirect() throws Exception {
     File testFile = createTempFile("test_odirect", "");
     try {