diff --git a/lib/net/http.rb b/lib/net/http.rb
index a82de9d2..6c43e623 100644
--- a/lib/net/http.rb
+++ b/lib/net/http.rb
@@ -82,6 +82,7 @@ class HTTPHeaderSyntaxError < StandardError; end
   #       body = 'Some text'
   #       http.post(path, body)  # Can also have a block.
   #       http.put(path, body)
+  #       http.query(path, body) # Can also have a block.
   #       http.delete(path)
   #       http.options(path)
   #       http.trace(path)
@@ -207,6 +208,7 @@ class HTTPHeaderSyntaxError < StandardError; end
   #   - #options: OPTIONS.
   #   - #trace: TRACE.
   #   - #patch: PATCH.
+  #   - #query, #request_query: QUERY.
   #
   # - {WebDAV methods}[https://en.wikipedia.org/wiki/WebDAV#Implementation]:
   #
@@ -553,6 +555,8 @@ class HTTPHeaderSyntaxError < StandardError; end
   #   Sends a PROPPATCH request and returns a response object.
   # - {#put}[rdoc-ref:Net::HTTP#put]:
   #   Sends a PUT request and returns a response object.
+  # - {#query}[rdoc-ref:Net::HTTP#query]:
+  #   Sends a QUERY request and returns a response object.
   # - {#request}[rdoc-ref:Net::HTTP#request]:
   #   Sends a request and returns a response object.
   # - {#request_get}[rdoc-ref:Net::HTTP#request_get]:
@@ -2101,6 +2105,25 @@ def patch(path, data, initheader = nil, dest = nil, &block) # :yield: +body_segm
       send_entity(path, data, initheader, dest, Patch, &block)
     end
 
+    # Sends a QUERY request to the server;
+    # returns an instance of a subclass of Net::HTTPResponse.
+    #
+    # The request is based on the Net::HTTP::Query object
+    # created from string +path+, string +data+, and initial headers hash +initheader+.
+    #
+    #   data = '{"userId": 1, "id": 1, "title": "delectus aut autem", "completed": false}'
+    #   http = Net::HTTP.new(hostname)
+    #   http.query('/todos/1', data) # => #<Net::HTTPOK 200 OK readbody=true>
+    #
+    # Related:
+    #
+    # - Net::HTTP::Query: request class for \HTTP method QUERY.
+    # - Net::HTTP.query: sends QUERY request, returns response body.
+    #
+    def query(path, data, initheader = nil, dest = nil, &block) # :yield: +body_segment+
+      send_entity(path, data, initheader, dest, Query, &block)
+    end
+
     # Sends a PUT request to the server;
     # returns an instance of a subclass of Net::HTTPResponse.
     #
@@ -2335,6 +2358,36 @@ def request_put(path, data, initheader = nil, &block)   #:nodoc:
       request Put.new(path, initheader), data, &block
     end
 
+    # Sends a QUERY request to the server;
+    # returns an instance of a subclass of Net::HTTPResponse.
+    #
+    # The request is based on the Net::HTTP::Query object
+    # created from string +path+, string +body+, and initial headers hash +initheader+.
+    #
+    #   http = Net::HTTP.new(hostname)
+    #   http.query('/todos/1', 'xyzzy')
+    #   # => #<Net::HTTPOK 200 OK readbody=true>
+    #
+    # With no block given, returns the response object:
+    #
+    #   http = Net::HTTP.new(hostname)
+    #   http.request_query('/todos') # => #<Net::HTTPOK 200 OK readbody=true>
+    #
+    # With a block given, calls the block with the response object
+    # and returns the response object:
+    #
+    #   http.request_query('/todos') do |res|
+    #     p res
+    #   end # => #<Net::HTTPOK 200 OK readbody=true>
+    #
+    # Output:
+    #
+    #   #<Net::HTTPOK 200 OK readbody=false>
+    #
+    def request_query(path, data, initheader = nil, &block) # :yield: +response+
+      request Query.new(path, initheader), data, &block
+    end
+
     alias get2   request_get    #:nodoc: obsolete
     alias head2  request_head   #:nodoc: obsolete
     alias post2  request_post   #:nodoc: obsolete
@@ -2430,7 +2483,7 @@ def send_entity(path, data, initheader, dest, type, &block)
 
     # :stopdoc:
 
-    IDEMPOTENT_METHODS_ = %w/GET HEAD PUT DELETE OPTIONS TRACE/.freeze # :nodoc:
+    IDEMPOTENT_METHODS_ = %w/GET HEAD PUT DELETE OPTIONS TRACE QUERY/.freeze # :nodoc:
 
     def transport_request(req)
       count = 0
diff --git a/lib/net/http/request.rb b/lib/net/http/request.rb
index 4a138572..db7641a7 100644
--- a/lib/net/http/request.rb
+++ b/lib/net/http/request.rb
@@ -61,6 +61,7 @@
 # - Net::HTTP::Options
 # - Net::HTTP::Trace
 # - Net::HTTP::Patch
+# - Net::HTTP::Query
 #
 # Subclasses for WebDAV requests:
 #
diff --git a/lib/net/http/requests.rb b/lib/net/http/requests.rb
index 8dc79a9f..2685b797 100644
--- a/lib/net/http/requests.rb
+++ b/lib/net/http/requests.rb
@@ -271,6 +271,41 @@ class Net::HTTP::Patch < Net::HTTPRequest
   RESPONSE_HAS_BODY = true
 end
 
+# \Class for representing
+# {HTTP method QUERY}[https://www.rfc-editor.org/rfc/rfc10008.html]:
+#
+#   require 'net/http'
+#   uri = URI('http://example.com')
+#   hostname = uri.hostname # => "example.com"
+#   uri.path = '/posts'
+#   req = Net::HTTP::Query.new(uri) # => #<Net::HTTP::Query QUERY>
+#   req.body = '{"title": "foo","body": "bar","userId": 1}'
+#   req.content_type = 'application/json'
+#   res = Net::HTTP.start(hostname) do |http|
+#     http.request(req)
+#   end
+#
+# See {Request Headers}[rdoc-ref:Net::HTTPRequest@Request+Headers].
+#
+# Properties:
+#
+# - Request body: yes.
+# - Response body: yes.
+# - {Safe}[https://en.wikipedia.org/wiki/HTTP#Safe_method]: yes.
+# - {Idempotent}[https://en.wikipedia.org/wiki/HTTP#Idempotent_method]: yes.
+# - {Cacheable}[https://en.wikipedia.org/wiki/HTTP#Cacheable_method]: yes.
+#
+# Related:
+#
+# - Net::HTTP#query: sends +QUERY+ request, returns response object.
+#
+class Net::HTTP::Query < Net::HTTPRequest
+  # :stopdoc:
+  METHOD = 'QUERY'
+  REQUEST_HAS_BODY = true
+  RESPONSE_HAS_BODY = true
+end
+
 #
 # WebDAV methods --- RFC2518
 #
diff --git a/sig/net-http.rbs b/sig/net-http.rbs
index b54eb936..cc19054d 100644
--- a/sig/net-http.rbs
+++ b/sig/net-http.rbs
@@ -94,6 +94,7 @@ module Net
   #           body = 'Some text'
   #           http.post(path, body)  # Can also have a block.
   #           http.put(path, body)
+  #           http.query(path, body) # Can also have a block.
   #           http.delete(path)
   #           http.options(path)
   #           http.trace(path)
@@ -222,6 +223,7 @@ module Net
   #     *   #options: OPTIONS.
   #     *   #trace: TRACE.
   #     *   #patch: PATCH.
+  #     *   #query, #request_query: QUERY.
   #
   # *   [WebDAV methods](https://en.wikipedia.org/wiki/WebDAV#Implementation):
   #
@@ -561,6 +563,8 @@ module Net
   #     returns a response object.
   # *   [#put](rdoc-ref:Net::HTTP#put): Sends a PUT request and returns a response
   #     object.
+  # *   [#query](rdoc-ref:Net::HTTP#query): Sends a QUERY request and returns a
+  #     response object.
   # *   [#request](rdoc-ref:Net::HTTP#request): Sends a request and returns a
   #     response object.
   # *   [#request_get](rdoc-ref:Net::HTTP#request_get): Sends a GET request and
@@ -1689,6 +1693,27 @@ module Net
     #
     def put: (String path, String data, ?headers initheader) -> Net::HTTPResponse
 
+    # <!--
+    #   rdoc-file=lib/net/http.rb
+    #   - query(path, data, initheader = nil, dest = nil) { |body_segment| ... }
+    # -->
+    # Sends a QUERY request to the server; returns an instance of a subclass of
+    # Net::HTTPResponse.
+    #
+    # The request is based on the Net::HTTP::Query object created from string
+    # `path`, string `data`, and initial headers hash `initheader`.
+    #
+    #     data = '{"userId": 1, "id": 1, "title": "delectus aut autem", "completed": false}'
+    #     http = Net::HTTP.new(hostname)
+    #     http.query('/todos/1', data) # => #<Net::HTTPOK 200 OK readbody=true>
+    #
+    # Related:
+    #
+    # *   Net::HTTP::Query: request class for HTTP method QUERY.
+    # *   Net::HTTP.query: sends QUERY request, returns response body.
+    #
+    def query: (String path, String data, ?headers initheader, ?bot dest) ?{ (String body_segment) -> void } -> Net::HTTPResponse
+
     # <!--
     #   rdoc-file=lib/net/http.rb
     #   - proppatch(path, body, initheader = nil)
@@ -1918,6 +1943,35 @@ module Net
 
     def request_put: (String path, String data, ?headers initheader) ?{ (Net::HTTPResponse response) -> void } -> Net::HTTPResponse
 
+    # <!--
+    #   rdoc-file=lib/net/http.rb
+    #   - request_query(path, data, initheader = nil) { |response| ... }
+    # -->
+    # Sends a QUERY request to the server; forms the response into a
+    # Net::HTTPResponse object.
+    #
+    # The request is based on the Net::HTTP::Query object created from string `path`,
+    # string `data`, and initial headers hash `initheader`.
+    #
+    # With no block given, returns the response object:
+    #
+    #     http = Net::HTTP.new(hostname)
+    #     http.query('/todos')
+    #     # => #<Net::HTTPOK 200 OK readbody=false>
+    #
+    # With a block given, calls the block with the response body and returns the
+    # response object:
+    #
+    #     http.request_query('/todos') do |res|
+    #       p res
+    #     end # => #<Net::HTTPOK 200 OK readbody=false>
+    #
+    # Output:
+    #
+    #     #<Net::HTTPOK 200 OK readbody=false>
+    #
+    def request_query: (String path, String data, ?headers initheader) ?{ (Net::HTTPResponse response) -> void } -> Net::HTTPResponse
+
     # <!--
     #   rdoc-file=lib/net/http.rb
     #   - get2(path, initheader = nil)
@@ -3233,6 +3287,7 @@ module Net
   # *   Net::HTTP::Options
   # *   Net::HTTP::Trace
   # *   Net::HTTP::Patch
+  # *   Net::HTTP::Query
   #
   # Subclasses for WebDAV requests:
   #
diff --git a/test/net/http/test_http.rb b/test/net/http/test_http.rb
index 477c3415..e5028d4e 100644
--- a/test/net/http/test_http.rb
+++ b/test/net/http/test_http.rb
@@ -636,6 +636,7 @@ module TestNetHTTP_version_1_2_methods
   def test_request
     start {|http|
       _test_request__GET http
+      _test_request__QUERY http
       _test_request__accept_encoding http
       _test_request__file http
       # _test_request__range http   # WEBrick does not support Range: header.
@@ -665,6 +666,21 @@ def _test_request__GET(http)
     }
   end
 
+  def _test_request__QUERY(http)
+    data = 'query data'
+    req = Net::HTTP::Query.new('/')
+    req['Accept'] = $test_net_http_data_type
+    req['Content-Type'] = 'application/x-www-form-urlencoded'
+    http.request(req, data) {|res|
+      assert_kind_of Net::HTTPResponse, res
+      unless self.is_a?(TestNetHTTP_v1_2_chunked)
+        assert_equal data.size, res['content-length'].to_i
+      end
+      assert_kind_of String, res.body
+      assert_equal data, res.body
+    }
+  end
+
   def _test_request__accept_encoding(http)
     req = Net::HTTP::Get.new('/', 'accept-encoding' => 'deflate')
     http.request(req) {|res|
@@ -791,6 +807,7 @@ def _test_request__uri_host(http)
   def test_send_request
     start {|http|
       _test_send_request__GET http
+      _test_send_request__QUERY http
       _test_send_request__HEAD http
       _test_send_request__POST http
     }
@@ -806,6 +823,17 @@ def _test_send_request__GET(http)
     assert_equal $test_net_http_data, res.body
   end
 
+  def _test_send_request__QUERY(http)
+    data = 'aaabbb cc ddddddddddd lkjoiu4j3qlkuoa'
+    res = http.send_request('QUERY', '/', data, 'content-type' => 'application/x-www-form-urlencoded')
+    assert_kind_of Net::HTTPResponse, res
+    unless self.is_a?(TestNetHTTP_v1_2_chunked)
+      assert_equal data.size, res['content-length'].to_i
+    end
+    assert_kind_of String, res.body
+    assert_equal data, res.body
+  end
+
   def _test_send_request__HEAD(http)
     res = http.send_request('HEAD', '/')
     assert_kind_of Net::HTTPResponse, res
diff --git a/test/net/http/utils.rb b/test/net/http/utils.rb
index f499963d..3618a92b 100644
--- a/test/net/http/utils.rb
+++ b/test/net/http/utils.rb
@@ -282,6 +282,8 @@ def spawn_server
         handle_post(path, headers, socket)
       when 'PATCH'
         handle_patch(path, headers, socket)
+      when 'QUERY'
+        handle_query(path, headers, socket)
       else
         socket.print "HTTP/1.1 405 Method Not Allowed\r\nContent-Length: 0\r\n\r\n"
       end
@@ -330,6 +332,13 @@ def handle_patch(path, headers, socket)
     socket.print(response)
   end
 
+  def handle_query(path, headers, socket)
+    body = socket.read(headers['Content-Length'].to_i)
+    content_type = headers['Content-Type'] || 'application/octet-stream'
+    response = "HTTP/1.1 200 OK\r\nContent-Type: #{content_type}\r\nContent-Length: #{body.bytesize}\r\n\r\n#{body}"
+    socket.print(response)
+  end
+
   def parse_content_type(content_type)
     return [nil, nil] unless content_type
     type, *params = content_type.split(';').map(&:strip)