diff --git a/ReactCommon/React-Fabric.podspec b/ReactCommon/React-Fabric.podspec
index 9c9d6934875..c28eee60d06 100644
--- a/ReactCommon/React-Fabric.podspec
+++ b/ReactCommon/React-Fabric.podspec
@@ -78,6 +78,7 @@ Pod::Spec.new do |s|
 
   s.subspec "core" do |ss|
     ss.dependency             folly_dep_name, folly_version
+    ss.dependency             "React-jsidynamic", version
     ss.compiler_flags       = folly_compiler_flags + ' ' + boost_compiler_flags
     ss.source_files         = "react/renderer/core/**/*.{m,mm,cpp,h}"
     ss.exclude_files        = "react/renderer/core/tests"
@@ -302,6 +303,7 @@ Pod::Spec.new do |s|
 
   s.subspec "uimanager" do |ss|
     ss.dependency             folly_dep_name, folly_version
+    ss.dependency             "React-jsidynamic", version
     ss.compiler_flags       = folly_compiler_flags
     ss.source_files         = "react/renderer/uimanager/**/*.{m,mm,cpp,h}"
     ss.exclude_files        = "react/renderer/uimanager/tests"
diff --git a/ReactCommon/ReactCommon.podspec b/ReactCommon/ReactCommon.podspec
index df244b8c7ee..4cd4f04e59c 100644
--- a/ReactCommon/ReactCommon.podspec
+++ b/ReactCommon/ReactCommon.podspec
@@ -54,6 +54,7 @@ Pod::Spec.new do |s|
     ss.subspec "core" do |sss|
       sss.source_files = "react/nativemodule/core/ReactCommon/**/*.{cpp,h}",
                          "react/nativemodule/core/platform/ios/**/*.{mm,cpp,h}"
+      sss.dependency "React-jsidynamic", version
     end
 
     s.subspec "react_debug_core" do |sss|
diff --git a/ReactCommon/jsi/React-jsi.podspec b/ReactCommon/jsi/React-jsi.podspec
index 0e2ee388889..8f0c3cdcaa3 100644
--- a/ReactCommon/jsi/React-jsi.podspec
+++ b/ReactCommon/jsi/React-jsi.podspec
@@ -30,7 +30,11 @@ Pod::Spec.new do |s|
   s.platforms              = { :ios => "12.4" }
   s.source                 = source
   s.source_files           = "**/*.{cpp,h}"
-  s.exclude_files          = "**/test/*"
+  s.exclude_files          = [
+                               "jsi/JSIDynamic.{h,cpp}",
+                               "jsi/jsilib-*.{h,cpp}",
+                               "**/test/*"
+                             ]
   s.framework              = "JavaScriptCore"
   s.compiler_flags         = folly_compiler_flags + ' ' + boost_compiler_flags
   s.pod_target_xcconfig    = { "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/boost\" \"$(PODS_ROOT)/RCT-Folly\" \"$(PODS_ROOT)/DoubleConversion\"" }
diff --git a/ReactCommon/jsi/React-jsidynamic.podspec b/ReactCommon/jsi/React-jsidynamic.podspec
new file mode 100644
index 00000000000..831c6b010fc
--- /dev/null
+++ b/ReactCommon/jsi/React-jsidynamic.podspec
@@ -0,0 +1,42 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require "json"
+
+package = JSON.parse(File.read(File.join(__dir__, "..", "..", "package.json")))
+version = package['version']
+
+source = { :git => 'https://github.com/facebook/react-native.git' }
+if version == '1000.0.0'
+  # This is an unpublished version, use the latest commit hash of the react-native repo, which we’re presumably in.
+  source[:commit] = `git rev-parse HEAD`.strip if system("git rev-parse --git-dir > /dev/null 2>&1")
+else
+  source[:tag] = "v#{version}"
+end
+
+folly_compiler_flags = '-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1 -Wno-comma -Wno-shorten-64-to-32'
+folly_version = '2021.07.22.00'
+boost_compiler_flags = '-Wno-documentation'
+
+Pod::Spec.new do |s|
+  s.name                   = "React-jsidynamic"
+  s.version                = version
+  s.summary                = "Provides support for converting between folly::dynamic and jsi::value"
+  s.homepage               = "https://reactnative.dev/"
+  s.license                = package["license"]
+  s.author                 = "Facebook, Inc. and its affiliates"
+  s.platforms              = { :ios => "12.4" }
+  s.source                 = source
+  s.source_files           = "jsi/JSIDynamic.{cpp,h}"
+  s.compiler_flags         = folly_compiler_flags + ' ' + boost_compiler_flags
+  s.pod_target_xcconfig    = { "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/boost\" \"$(PODS_ROOT)/RCT-Folly\" \"$(PODS_ROOT)/DoubleConversion\"" }
+  s.header_dir             = 'jsi'
+
+  s.dependency "boost", "1.76.0"
+  s.dependency "DoubleConversion"
+  s.dependency "RCT-Folly", folly_version
+  s.dependency "glog"
+  s.dependency "React-jsi", version
+end
diff --git a/ReactCommon/jsiexecutor/React-jsiexecutor.podspec b/ReactCommon/jsiexecutor/React-jsiexecutor.podspec
index 05cdcb3f16e..c0846011f90 100644
--- a/ReactCommon/jsiexecutor/React-jsiexecutor.podspec
+++ b/ReactCommon/jsiexecutor/React-jsiexecutor.podspec
@@ -36,6 +36,7 @@ Pod::Spec.new do |s|
 
   s.dependency "React-cxxreact", version
   s.dependency "React-jsi", version
+  s.dependency "React-jsidynamic", version
   s.dependency "React-perflogger", version
   s.dependency "RCT-Folly", folly_version
   s.dependency "DoubleConversion"
diff --git a/packages/rn-tester/Podfile.lock b/packages/rn-tester/Podfile.lock
index 26dfb2c796d..cb0cf78326e 100644
--- a/packages/rn-tester/Podfile.lock
+++ b/packages/rn-tester/Podfile.lock
@@ -495,6 +495,7 @@ PODS:
     - RCTTypeSafety (= 1000.0.0)
     - React-graphics (= 1000.0.0)
     - React-jsi (= 1000.0.0)
+    - React-jsidynamic (= 1000.0.0)
     - React-jsiexecutor (= 1000.0.0)
     - ReactCommon/turbomodule/core (= 1000.0.0)
   - React-Fabric/debug_core (1000.0.0):
@@ -593,6 +594,7 @@ PODS:
     - RCTTypeSafety (= 1000.0.0)
     - React-graphics (= 1000.0.0)
     - React-jsi (= 1000.0.0)
+    - React-jsidynamic (= 1000.0.0)
     - React-jsiexecutor (= 1000.0.0)
     - ReactCommon/turbomodule/core (= 1000.0.0)
   - React-Fabric/utils (1000.0.0):
@@ -633,12 +635,19 @@ PODS:
     - DoubleConversion
     - glog
     - RCT-Folly (= 2021.07.22.00)
+  - React-jsidynamic (1000.0.0):
+    - boost (= 1.76.0)
+    - DoubleConversion
+    - glog
+    - RCT-Folly (= 2021.07.22.00)
+    - React-jsi (= 1000.0.0)
   - React-jsiexecutor (1000.0.0):
     - DoubleConversion
     - glog
     - RCT-Folly (= 2021.07.22.00)
     - React-cxxreact (= 1000.0.0)
     - React-jsi (= 1000.0.0)
+    - React-jsidynamic (= 1000.0.0)
     - React-perflogger (= 1000.0.0)
   - React-jsinspector (1000.0.0)
   - React-logger (1000.0.0):
@@ -731,6 +740,7 @@ PODS:
     - React-Core (= 1000.0.0)
     - React-cxxreact (= 1000.0.0)
     - React-jsi (= 1000.0.0)
+    - React-jsidynamic (= 1000.0.0)
     - React-logger (= 1000.0.0)
     - React-perflogger (= 1000.0.0)
   - ReactCommon/turbomodule/samples (1000.0.0):
@@ -801,6 +811,7 @@ DEPENDENCIES:
   - React-hermes (from `../../ReactCommon/hermes`)
   - React-jsi (from `../../ReactCommon/jsi`)
   - React-jsi/Fabric (from `../../ReactCommon/jsi`)
+  - React-jsidynamic (from `../../ReactCommon/jsi`)
   - React-jsiexecutor (from `../../ReactCommon/jsiexecutor`)
   - React-jsinspector (from `../../ReactCommon/jsinspector`)
   - React-logger (from `../../ReactCommon/logger`)
@@ -884,6 +895,8 @@ EXTERNAL SOURCES:
     :path: "../../ReactCommon/hermes"
   React-jsi:
     :path: "../../ReactCommon/jsi"
+  React-jsidynamic:
+    :path: "../../ReactCommon/jsi"
   React-jsiexecutor:
     :path: "../../ReactCommon/jsiexecutor"
   React-jsinspector:
@@ -946,7 +959,7 @@ SPEC CHECKSUMS:
   FlipperKit: cbdee19bdd4e7f05472a66ce290f1b729ba3cb86
   fmt: ff9d55029c625d3757ed641535fd4a75fedc7ce9
   glog: 04b94705f318337d7ead9e6d17c019bd9b1f6b1b
-  hermes-engine: 8aa7846f48430e8517285eb0ddf8a614eee39cb3
+  hermes-engine: 34601a4ede336b281b66fbcc4ec113c7813dbc9d
   libevent: 4049cae6c81cdb3654a443be001fb9bdceff7913
   OpenSSL-Universal: ebc357f1e6bc71fa463ccb2fe676756aff50e88c
   RCT-Folly: 0080d0a6ebf2577475bda044aa59e2ca1f909cda
@@ -959,11 +972,12 @@ SPEC CHECKSUMS:
   React-Core: ce4282fb714ffbe444b84d296d1728eaee4d0e9f
   React-CoreModules: 675170bccf156da3a3348e04e2036ce401b2010d
   React-cxxreact: 7276467c246302fedf598cc40d7003896ddb20ba
-  React-Fabric: a696c92be541f2015b9777956a3e7df8a8f34aed
+  React-Fabric: 141459e61c825acf02d26ece099acbd9cbd87b99
   React-graphics: 5ccc9cc0d91794fd42bc1c693e9aea207554bbef
   React-hermes: 7b9306aee1d58ba030614e54eb8041056119430f
-  React-jsi: a042596cb558abea721ab5e23cb175647610a73d
-  React-jsiexecutor: f7fbac5dff7e7ff110a66edf2626b4f4f4600ef5
+  React-jsi: c2a71fdc55642893768c517199fb8a71805159dc
+  React-jsidynamic: 2b14ac1b6d3a1b7daa1e5a424b98de87da981698
+  React-jsiexecutor: 14e899380e3fe9ca74c4e19727540a03e7574721
   React-jsinspector: 7733dd522d044aef87caa39f3eda77593358a7eb
   React-logger: c7960346b021767ed90971aff592a44e3d69f8bb
   React-perflogger: c4fdd48988c2d3047186fc1bc1772d634cfca2ea
@@ -982,7 +996,7 @@ SPEC CHECKSUMS:
   React-RCTVibration: 0386f50996a153b3f39cecbe7d139763ac9a9fdf
   React-rncore: 665c70690f404bbfa3948148de72689672a906d2
   React-runtimeexecutor: 97dca9247f4d3cfe0733384b189c6930fbd402b7
-  ReactCommon: 8e39c4b24da570ea2b631accbf779b5891befe0c
+  ReactCommon: b1f213aa09e3dfd0a89389b5023fdb1cd6528e96
   ScreenshotManager: 3fc534a218e7b8dde632158411d0f15b0ca8893c
   SocketRocket: fccef3f9c5cedea1353a9ef6ada904fde10d6608
   Yoga: 1b1a12ff3d86a10565ea7cbe057d42f5e5fb2a07
diff --git a/scripts/react_native_pods.rb b/scripts/react_native_pods.rb
index 03376729a1d..3363dfced09 100644
--- a/scripts/react_native_pods.rb
+++ b/scripts/react_native_pods.rb
@@ -95,6 +95,7 @@ def use_react_native! (
   pod 'React-bridging', :path => "#{prefix}/ReactCommon"
   pod 'React-cxxreact', :path => "#{prefix}/ReactCommon/cxxreact"
   pod 'React-jsi', :path => "#{prefix}/ReactCommon/jsi"
+  pod 'React-jsidynamic', :path => "#{prefix}/ReactCommon/jsi"
   pod 'React-jsiexecutor', :path => "#{prefix}/ReactCommon/jsiexecutor"
   pod 'React-jsinspector', :path => "#{prefix}/ReactCommon/jsinspector"
   pod 'React-callinvoker', :path => "#{prefix}/ReactCommon/callinvoker"