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diff --git a/src/mongo/s/commands/cluster_drop_indexes_cmd.cpp b/src/mongo/s/commands/cluster_drop_indexes_cmd.cpp
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+++ b/src/mongo/s/commands/cluster_drop_indexes_cmd.cpp
@@ -0,0 +1,96 @@
+/**
+ *    Copyright (C) 2018 MongoDB Inc.
+ *
+ *    This program is free software: you can redistribute it and/or  modify
+ *    it under the terms of the GNU Affero General Public License, version 3,
+ *    as published by the Free Software Foundation.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the GNU Affero General Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/commands.h"
+#include "mongo/s/commands/cluster_commands_helpers.h"
+#include "mongo/util/log.h"
+
+namespace mongo {
+namespace {
+
+class DropIndexesCmd : public ErrmsgCommandDeprecated {
+public:
+    DropIndexesCmd() : ErrmsgCommandDeprecated("dropIndexes", "deleteIndexes") {}
+
+    AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
+        return AllowedOnSecondary::kNever;
+    }
+
+    bool adminOnly() const override {
+        return false;
+    }
+
+    void addRequiredPrivileges(const std::string& dbname,
+                               const BSONObj& cmdObj,
+                               std::vector<Privilege>* out) const override {
+        ActionSet actions;
+        actions.addAction(ActionType::dropIndex);
+        out->push_back(Privilege(parseResourcePattern(dbname, cmdObj), actions));
+    }
+
+    bool supportsWriteConcern(const BSONObj& cmd) const override {
+        return true;
+    }
+
+    bool errmsgRun(OperationContext* opCtx,
+                   const std::string& dbName,
+                   const BSONObj& cmdObj,
+                   std::string& errmsg,
+                   BSONObjBuilder& output) override {
+        const NamespaceString nss(CommandHelpers::parseNsCollectionRequired(dbName, cmdObj));
+        LOG(1) << "dropIndexes: " << nss << " cmd:" << redact(cmdObj);
+
+        // If the collection is sharded, we target all shards rather than just shards that own
+        // chunks for the collection, because some shard may have previously owned chunks but no
+        // longer does (and so, may have the index). However, we ignore NamespaceNotFound errors
+        // from individual shards, because some shards may have never owned chunks for the
+        // collection. We additionally ignore IndexNotFound errors, because the index may not have
+        // been built on a shard if the earlier createIndexes command coincided with the shard
+        // receiving its first chunk for the collection (see SERVER-31715).
+        auto shardResponses = scatterGatherOnlyVersionIfUnsharded(
+            opCtx,
+            dbName,
+            nss,
+            CommandHelpers::filterCommandRequestForPassthrough(cmdObj),
+            ReadPreferenceSetting::get(opCtx),
+            Shard::RetryPolicy::kNotIdempotent);
+        return appendRawResponses(opCtx,
+                                  &errmsg,
+                                  &output,
+                                  std::move(shardResponses),
+                                  {ErrorCodes::NamespaceNotFound, ErrorCodes::IndexNotFound});
+    }
+
+} dropIndexesCmd;
+
+}  // namespace
+}  // namespace mongo