diff --git a/modules/openapi-generator/src/main/resources/r/modelAnyOf.mustache b/modules/openapi-generator/src/main/resources/r/modelAnyOf.mustache
new file mode 100644
index 00000000000..287264a1ceb
--- /dev/null
+++ b/modules/openapi-generator/src/main/resources/r/modelAnyOf.mustache
@@ -0,0 +1,52 @@
+#' @docType class
+#' @title {{classname}}
+#'
+#' @description {{classname}} Class
+#'
+#' @format An \code{R6Class} generator object
+#'
+#' @importFrom R6 R6Class
+#' @importFrom jsonlite fromJSON toJSON
+#' @export
+{{classname}} <- R6::R6Class(
+  '{{classname}}',
+  public = list(
+    actual_instance = NULL,
+    actual_type = NULL,
+    any_of = list({{#anyOf}}"{{{.}}}"{{^-last}}, {{/-last}}{{/anyOf}}),
+    initialize = function(
+        {{#requiredVars}}`{{baseName}}`, {{/requiredVars}}{{#optionalVars}}`{{baseName}}`={{{defaultValue}}}{{^defaultValue}}NULL{{/defaultValue}}, {{/optionalVars}}...
+    ) {
+      local_optional_var <- list(...)
+    },
+    fromJSON = function(input) {
+      error_messages <- list()
+
+      {{#anyOf}}
+      {{{.}}}_result <- tryCatch({
+          {{{.}}}$public_methods$validateJSON(input)
+          {{{.}}}_instance <- {{{.}}}$new()
+          self$actual_instance <- {{{.}}}_instance$fromJSON(input)
+          self$actual_type <- "{{{.}}}"
+          return(self)
+        },
+        error = function(err) err
+      )
+
+      if (!is.null({{{.}}}_result['error'])) {
+        error_messages <- append(error_messages, {{{.}}}_result['message'])
+      }
+
+      {{/anyOf}}
+      # no match
+      stop(paste("No match found when deserializing the payload into {{{classname}}} with anyOf schemas {{#anyOf}}{{{.}}}{{^-last}}, {{/-last}}{{/anyOf}}. Details: ", paste(error_messages, collapse = ', ')))
+    },
+    toJSON = function() {
+      if (!is.null(self$actual_instance)) {
+        self$actual_instance$toJSONString()
+      } else {
+        NULL
+      }
+    }
+  )
+)
diff --git a/modules/openapi-generator/src/test/resources/3_0/r/petstore.yaml b/modules/openapi-generator/src/test/resources/3_0/r/petstore.yaml
index c9827af375e..c6bb52c52ee 100644
--- a/modules/openapi-generator/src/test/resources/3_0/r/petstore.yaml
+++ b/modules/openapi-generator/src/test/resources/3_0/r/petstore.yaml
@@ -801,6 +801,10 @@ components:
       allOf:
         - $ref: '#/components/schemas/Tag'
         - $ref: '#/components/schemas/ApiResponse'
+    AnyOfPig:
+      anyOf:
+        - $ref: '#/components/schemas/BasquePig'
+        - $ref: '#/components/schemas/DanishPig'
     Pig:
       oneOf:
         - $ref: '#/components/schemas/BasquePig'
diff --git a/samples/client/petstore/R/.openapi-generator/FILES b/samples/client/petstore/R/.openapi-generator/FILES
index 32f11b6dbb2..0549314051d 100644
--- a/samples/client/petstore/R/.openapi-generator/FILES
+++ b/samples/client/petstore/R/.openapi-generator/FILES
@@ -5,6 +5,7 @@ DESCRIPTION
 NAMESPACE
 R/allof_tag_api_response.R
 R/animal.R
+R/any_of_pig.R
 R/api_client.R
 R/api_exception.R
 R/api_response.R
@@ -28,6 +29,7 @@ R/user_api.R
 README.md
 docs/AllofTagApiResponse.md
 docs/Animal.md
+docs/AnyOfPig.md
 docs/BasquePig.md
 docs/Cat.md
 docs/CatAllOf.md
diff --git a/samples/client/petstore/R/NAMESPACE b/samples/client/petstore/R/NAMESPACE
index 95a53392965..77557a91938 100644
--- a/samples/client/petstore/R/NAMESPACE
+++ b/samples/client/petstore/R/NAMESPACE
@@ -14,6 +14,7 @@ export(ApiException)
 # Models
 export(AllofTagApiResponse)
 export(Animal)
+export(AnyOfPig)
 export(BasquePig)
 export(Cat)
 export(CatAllOf)
diff --git a/samples/client/petstore/R/R/any_of_pig.R b/samples/client/petstore/R/R/any_of_pig.R
new file mode 100644
index 00000000000..7197d52b438
--- /dev/null
+++ b/samples/client/petstore/R/R/any_of_pig.R
@@ -0,0 +1,72 @@
+# OpenAPI Petstore
+#
+# This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+#
+# The version of the OpenAPI document: 1.0.0
+# Generated by: https://openapi-generator.tech
+
+#' @docType class
+#' @title AnyOfPig
+#'
+#' @description AnyOfPig Class
+#'
+#' @format An \code{R6Class} generator object
+#'
+#' @importFrom R6 R6Class
+#' @importFrom jsonlite fromJSON toJSON
+#' @export
+AnyOfPig <- R6::R6Class(
+  'AnyOfPig',
+  public = list(
+    actual_instance = NULL,
+    actual_type = NULL,
+    any_of = list("BasquePig", "DanishPig"),
+    initialize = function(
+        `className`, `color`, `size`, ...
+    ) {
+      local_optional_var <- list(...)
+    },
+    fromJSON = function(input) {
+      error_messages <- list()
+
+      BasquePig_result <- tryCatch({
+          BasquePig$public_methods$validateJSON(input)
+          BasquePig_instance <- BasquePig$new()
+          self$actual_instance <- BasquePig_instance$fromJSON(input)
+          self$actual_type <- "BasquePig"
+          return(self)
+        },
+        error = function(err) err
+      )
+
+      if (!is.null(BasquePig_result['error'])) {
+        error_messages <- append(error_messages, BasquePig_result['message'])
+      }
+
+      DanishPig_result <- tryCatch({
+          DanishPig$public_methods$validateJSON(input)
+          DanishPig_instance <- DanishPig$new()
+          self$actual_instance <- DanishPig_instance$fromJSON(input)
+          self$actual_type <- "DanishPig"
+          return(self)
+        },
+        error = function(err) err
+      )
+
+      if (!is.null(DanishPig_result['error'])) {
+        error_messages <- append(error_messages, DanishPig_result['message'])
+      }
+
+      # no match
+      stop(paste("No match found when deserializing the payload into AnyOfPig with anyOf schemas BasquePig, DanishPig. Details: ", paste(error_messages, collapse = ', ')))
+    },
+    toJSON = function() {
+      if (!is.null(self$actual_instance)) {
+        self$actual_instance$toJSONString()
+      } else {
+        NULL
+      }
+    }
+  )
+)
+
diff --git a/samples/client/petstore/R/README.md b/samples/client/petstore/R/README.md
index 4c75bb991bf..538251cf406 100644
--- a/samples/client/petstore/R/README.md
+++ b/samples/client/petstore/R/README.md
@@ -83,6 +83,7 @@ Class | Method | HTTP request | Description
 
  - [AllofTagApiResponse](docs/AllofTagApiResponse.md)
  - [Animal](docs/Animal.md)
+ - [AnyOfPig](docs/AnyOfPig.md)
  - [BasquePig](docs/BasquePig.md)
  - [Cat](docs/Cat.md)
  - [CatAllOf](docs/CatAllOf.md)
diff --git a/samples/client/petstore/R/docs/AnyOfPig.md b/samples/client/petstore/R/docs/AnyOfPig.md
new file mode 100644
index 00000000000..296d7c7e334
--- /dev/null
+++ b/samples/client/petstore/R/docs/AnyOfPig.md
@@ -0,0 +1,11 @@
+# petstore::AnyOfPig
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**className** | **character** |  | 
+**color** | **character** |  | 
+**size** | **integer** |  | 
+
+
diff --git a/samples/client/petstore/R/tests/testthat/test_any_of_pig.R b/samples/client/petstore/R/tests/testthat/test_any_of_pig.R
new file mode 100644
index 00000000000..8ca3b8e73d1
--- /dev/null
+++ b/samples/client/petstore/R/tests/testthat/test_any_of_pig.R
@@ -0,0 +1,27 @@
+# Automatically generated by openapi-generator (https://openapi-generator.tech)
+# Please update as you see appropriate
+
+context("Test AnyOfPig")
+
+model_instance <- AnyOfPig$new()
+
+test_that("className", {
+  # tests for the property `className` (character)
+
+  # uncomment below to test the property
+  #expect_equal(model.instance$`className`, "EXPECTED_RESULT")
+})
+
+test_that("color", {
+  # tests for the property `color` (character)
+
+  # uncomment below to test the property
+  #expect_equal(model.instance$`color`, "EXPECTED_RESULT")
+})
+
+test_that("size", {
+  # tests for the property `size` (integer)
+
+  # uncomment below to test the property
+  #expect_equal(model.instance$`size`, "EXPECTED_RESULT")
+})
diff --git a/samples/client/petstore/R/tests/testthat/test_petstore.R b/samples/client/petstore/R/tests/testthat/test_petstore.R
index 951eae6d923..bb3df6fd168 100644
--- a/samples/client/petstore/R/tests/testthat/test_petstore.R
+++ b/samples/client/petstore/R/tests/testthat/test_petstore.R
@@ -156,7 +156,7 @@ test_that("Tests oneOf", {
   original_danish_pig = DanishPig$new()$fromJSON(danish_pig_json)
   original_basque_pig = BasquePig$new()$fromJSON(basque_pig_json)
 
-  # test fromJSNO, actual_tpye, actual_instance
+  # test fromJSON, actual_tpye, actual_instance
   pig <- Pig$new()
   danish_pig <- pig$fromJSON(danish_pig_json)
   expect_equal(danish_pig$actual_type, "DanishPig")
@@ -168,7 +168,6 @@ test_that("Tests oneOf", {
   expect_equal(pig$actual_instance$className, "DanishPig")
 
   # test toJSON
-  #expect_equal(danish_pig$toJSON(), "")
   expect_equal(danish_pig$toJSON(), original_danish_pig$toJSONString())
 
   basque_pig <- pig$fromJSON(basque_pig_json)
@@ -181,6 +180,49 @@ test_that("Tests oneOf", {
   expect_error(pig$fromJSON('{}'), 'No match found when deserializing the payload into Pig with oneOf schemas BasquePig, DanishPig. Details:  The JSON input ` \\{\\} ` is invalid for BasquePig: the required field `className` is missing\\., The JSON input ` \\{\\} ` is invalid for DanishPig: the required field `className` is missing\\.')
 
 
+})
+
+test_that("Tests anyOf", {
+  basque_pig_json <-
+  '{"className": "BasquePig", "color": "red"}'
+
+  danish_pig_json <-
+  '{"className": "DanishPig", "size": 7}'
+
+  wrong_json <- 
+  '[
+    {"Name" : "Tom", "Age" : 32, "Occupation" : "Consultant"}, 
+    {},
+    {"Name" : "Ada", "Occupation" : "Engineer"}
+  ]'
+
+  original_danish_pig = DanishPig$new()$fromJSON(danish_pig_json)
+  original_basque_pig = BasquePig$new()$fromJSON(basque_pig_json)
+
+  # test fromJSON, actual_tpye, actual_instance
+  pig <- AnyOfPig$new()
+  danish_pig <- pig$fromJSON(danish_pig_json)
+  expect_equal(danish_pig$actual_type, "DanishPig")
+  expect_equal(danish_pig$actual_instance$size, 7)
+  expect_equal(danish_pig$actual_instance$className, "DanishPig")
+
+  expect_equal(pig$actual_type, "DanishPig")
+  expect_equal(pig$actual_instance$size, 7)
+  expect_equal(pig$actual_instance$className, "DanishPig")
+
+  # test toJSON
+  expect_equal(danish_pig$toJSON(), original_danish_pig$toJSONString())
+
+  basque_pig <- pig$fromJSON(basque_pig_json)
+  expect_equal(basque_pig$actual_type, "BasquePig")
+  expect_equal(basque_pig$actual_instance$color, "red")
+  expect_equal(basque_pig$actual_instance$className, "BasquePig")
+  expect_equal(basque_pig$toJSON(), original_basque_pig$toJSONString())
+
+  # test exception when no matche found
+  expect_error(pig$fromJSON('{}'), 'No match found when deserializing the payload into AnyOfPig with anyOf schemas BasquePig, DanishPig. Details:  The JSON input ` \\{\\} ` is invalid for BasquePig: the required field `className` is missing\\., The JSON input ` \\{\\} ` is invalid for DanishPig: the required field `className` is missing\\.')
+
+
 })
 
 #test_that("GetPetById", {