diff --git a/src/tapis-api/systems/createChildSystem.ts b/src/tapis-api/systems/createChildSystem.ts
new file mode 100644
index 000000000..0d3c2d253
--- /dev/null
+++ b/src/tapis-api/systems/createChildSystem.ts
@@ -0,0 +1,21 @@
+import { Systems } from '@tapis/tapis-typescript';
+import { apiGenerator, errorDecoder } from 'tapis-api/utils';
+
+const createChildSystem = (
+  reqPostChildSystem: Systems.ReqPostChildSystem,
+  parentId: string,
+  basePath: string,
+  jwt: string
+) => {
+  const api: Systems.ChildSystemsApi = apiGenerator<Systems.ChildSystemsApi>(
+    Systems,
+    Systems.ChildSystemsApi,
+    basePath,
+    jwt
+  );
+  return errorDecoder<Systems.RespBasic>(() =>
+    api.createChildSystem({ reqPostChildSystem, parentId })
+  );
+};
+
+export default createChildSystem;
diff --git a/src/tapis-api/systems/index.ts b/src/tapis-api/systems/index.ts
index c5214e454..8cb2e63c0 100644
--- a/src/tapis-api/systems/index.ts
+++ b/src/tapis-api/systems/index.ts
@@ -6,3 +6,4 @@ export { default as deleteSystem } from './deleteSystem';
 export { default as undeleteSystem } from './undeleteSystem';
 export { default as shareSystemPublic } from './shareSystemPublic';
 export { default as unShareSystemPublic } from './unShareSystemPublic';
+export { default as createChildSystem } from './createChildSystem';
diff --git a/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/CreateChildSystemModal.module.scss b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/CreateChildSystemModal.module.scss
new file mode 100644
index 000000000..04ba38e91
--- /dev/null
+++ b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/CreateChildSystemModal.module.scss
@@ -0,0 +1,16 @@
+.modal-settings {
+  max-height: 38rem;
+  overflow-y: scroll;
+}
+
+.item {
+  border: 1px dotted lightgray;
+  padding: 0.5em 0.5em 0.5em 0.5em;
+  margin-bottom: 1em;
+}
+
+.array {
+  border: 1px solid gray;
+  padding: 0.5em 0.5em 0.5em 0.5em;
+  margin-bottom: 0.5em;
+}
diff --git a/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/CreateChildSystemModal.tsx b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/CreateChildSystemModal.tsx
new file mode 100644
index 000000000..3e25b2db3
--- /dev/null
+++ b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/CreateChildSystemModal.tsx
@@ -0,0 +1,130 @@
+import { Button } from 'reactstrap';
+import { GenericModal } from 'tapis-ui/_common';
+import { SubmitWrapper } from 'tapis-ui/_wrappers';
+import { ToolbarModalProps } from '../SystemLayoutToolbar';
+import { Form, Formik } from 'formik';
+import { FormikInput } from 'tapis-ui/_common';
+import { useTapisConfig } from 'tapis-hooks';
+import { useCreateChildSystem } from 'tapis-hooks/systems';
+import { useEffect } from 'react';
+import { useLocation } from 'react-router-dom';
+import styles from './CreateChildSystemModal.module.scss';
+import * as Yup from 'yup';
+
+const CreateChildSystemModal: React.FC<ToolbarModalProps> = ({ toggle }) => {
+  const { isLoading, isSuccess, error, reset, createChildSystem } =
+    useCreateChildSystem();
+
+  useEffect(() => {
+    reset();
+  }, [reset]);
+
+  const validationSchema = Yup.object({
+    sysname: Yup.string()
+      .min(1)
+      .max(80, 'System name should not be longer than 80 characters')
+      .matches(
+        /^[a-zA-Z0-9_.-]+$/,
+        "Must contain only alphanumeric characters and the following: '.', '_', '-'"
+      )
+      .required('System name is a required field'),
+    rootDir: Yup.string()
+      .min(1)
+      .max(4096, 'Root Directory should not be longer than 4096 characters'),
+    effectiveUserId: Yup.string()
+      .max(60, 'Effective User ID should not be longer than 60 characters')
+      .required('Effective User ID is a required field'),
+    parentId: Yup.string().required('Parent ID is a required field'),
+  });
+
+  const initialValues = {
+    sysname: '',
+    rootDir: '/',
+    effectiveUserId: useTapisConfig().claims['tapis/username'],
+    parentId: String(useLocation().pathname.split('/').pop()),
+  };
+
+  const onSubmit = ({
+    sysname,
+    rootDir,
+    effectiveUserId,
+    parentId,
+  }: {
+    sysname: string;
+    rootDir: string;
+    effectiveUserId: string;
+    parentId: string;
+  }) => {
+    createChildSystem(
+      {
+        id: sysname,
+        effectiveUserId,
+        rootDir,
+      },
+      parentId
+    );
+  };
+
+  return (
+    <GenericModal
+      toggle={toggle}
+      title="Create New Child System"
+      body={
+        <div className={styles['modal-settings']}>
+          <Formik
+            initialValues={initialValues}
+            validationSchema={validationSchema}
+            onSubmit={onSubmit}
+          >
+            {() => (
+              <Form id="newsystem-form">
+                <FormikInput
+                  name="sysname"
+                  label="System Name"
+                  required={true}
+                  description={`System Name`}
+                  aria-label="Input"
+                />
+                <FormikInput
+                  name="effectiveUserId"
+                  label="Effective User ID"
+                  required={true}
+                  description={`Effective User ID`}
+                  aria-label="Input"
+                />
+                <FormikInput
+                  name="rootDir"
+                  label="Root Directory"
+                  required={true}
+                  description={`Root Directory`}
+                  aria-label="Input"
+                />
+              </Form>
+            )}
+          </Formik>
+        </div>
+      }
+      footer={
+        <SubmitWrapper
+          className={styles['modal-footer']}
+          isLoading={isLoading}
+          error={error}
+          success={isSuccess ? `Successfully created a new child system` : ''}
+          reverse={true}
+        >
+          <Button
+            form="newsystem-form"
+            color="primary"
+            disabled={isLoading || isSuccess}
+            aria-label="Submit"
+            type="submit"
+          >
+            Create a new child system
+          </Button>
+        </SubmitWrapper>
+      }
+    />
+  );
+};
+
+export default CreateChildSystemModal;
diff --git a/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/index.ts b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/index.ts
new file mode 100644
index 000000000..ae8170912
--- /dev/null
+++ b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/CreateChildSystemModal/index.ts
@@ -0,0 +1,3 @@
+import CreateChildSystemModal from './CreateChildSystemModal';
+
+export default CreateChildSystemModal;
diff --git a/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/SystemLayoutToolbar.tsx b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/SystemLayoutToolbar.tsx
index 9acece787..d5fed5bae 100644
--- a/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/SystemLayoutToolbar.tsx
+++ b/src/tapis-app/Systems/SystemDetail/_Layout/SystemLayoutToolbar/SystemLayoutToolbar.tsx
@@ -5,6 +5,7 @@ import styles from './SystemLayoutToolbar.module.scss';
 import { useLocation } from 'react-router-dom';
 import ShareSystemPublicModal from './ShareSystemPublicModal';
 import UnShareSystemPublicModal from './UnShareSystemPublicModal';
+import CreateChildSystemModal from './CreateChildSystemModal';
 
 type ToolbarButtonProps = {
   text: string;
@@ -64,13 +65,22 @@ const SystemLayoutToolbar: React.FC = () => {
             onClick={() => setModal('unsharesystempublic')}
             aria-label="unShareSystemPublic"
           />
-
+          <ToolbarButton
+            text="Create Child System"
+            icon="add"
+            disabled={false}
+            onClick={() => setModal('ConfirmModal-CreateChildSystem')}
+            aria-label="unShareSystemPublic"
+          />
           {modal === 'sharesystempublic' && (
             <ShareSystemPublicModal toggle={toggle} />
           )}
           {modal === 'unsharesystempublic' && (
             <UnShareSystemPublicModal toggle={toggle} />
           )}
+          {modal === 'ConfirmModal-CreateChildSystem' && (
+            <CreateChildSystemModal toggle={toggle} />
+          )}
         </div>
       )}
     </div>
diff --git a/src/tapis-hooks/systems/index.ts b/src/tapis-hooks/systems/index.ts
index fd711ab0c..a223a77de 100644
--- a/src/tapis-hooks/systems/index.ts
+++ b/src/tapis-hooks/systems/index.ts
@@ -7,3 +7,4 @@ export { default as useDeleteSystem } from './useDeleteSystem';
 export { default as useUndeleteSystem } from './useUndeleteSystem';
 export { default as useShareSystemPublic } from './useShareSystemPublic';
 export { default as useUnShareSystemPublic } from './useUnShareSystemPublic';
+export { default as useCreateChildSystem } from './useCreateChildSystem';
diff --git a/src/tapis-hooks/systems/queryKeys.ts b/src/tapis-hooks/systems/queryKeys.ts
index 9d1e15507..6fcbf40e5 100644
--- a/src/tapis-hooks/systems/queryKeys.ts
+++ b/src/tapis-hooks/systems/queryKeys.ts
@@ -6,6 +6,7 @@ const QueryKeys = {
   deleteSystem: 'systems/deleteSystem',
   shareSystemPublic: 'systems/shareSystemPublic',
   unShareSystemPublic: 'systems/unShareSystemPublic',
+  createChildSystem: 'systems/createChildSystem',
 };
 
 export default QueryKeys;
diff --git a/src/tapis-hooks/systems/useCreateChildSystem.ts b/src/tapis-hooks/systems/useCreateChildSystem.ts
new file mode 100644
index 000000000..5a1f92721
--- /dev/null
+++ b/src/tapis-hooks/systems/useCreateChildSystem.ts
@@ -0,0 +1,40 @@
+import { useMutation, MutateOptions } from 'react-query';
+import { Systems } from '@tapis/tapis-typescript';
+import { createChildSystem } from 'tapis-api/systems';
+import { useTapisConfig } from '../context';
+import QueryKeys from './queryKeys';
+
+type createChildSystemParams = {
+  reqPostChildSystem: Systems.ReqPostChildSystem;
+  parentId: string;
+};
+
+const useCreateChildSystem = () => {
+  const { basePath, accessToken } = useTapisConfig();
+  const jwt = accessToken?.access_token || '';
+
+  const { mutate, isLoading, isError, isSuccess, data, error, reset } =
+    useMutation<Systems.RespBasic, Error, createChildSystemParams>(
+      [QueryKeys.createChildSystem, basePath, jwt],
+      ({ reqPostChildSystem, parentId }) =>
+        createChildSystem(reqPostChildSystem, parentId, basePath, jwt)
+    );
+
+  return {
+    isLoading,
+    isError,
+    isSuccess,
+    data,
+    error,
+    reset,
+    createChildSystem: (
+      reqPostChildSystem: Systems.ReqPostChildSystem,
+      parentId: string,
+      options?: MutateOptions<Systems.RespBasic, Error, createChildSystemParams>
+    ) => {
+      return mutate({ reqPostChildSystem, parentId }, options);
+    },
+  };
+};
+
+export default useCreateChildSystem;
diff --git a/src/tapis-ui/_common/ConfirmModal/ConfirmModal.tsx b/src/tapis-ui/_common/ConfirmModal/ConfirmModal.tsx
index a8920c644..3b5d0fc9d 100644
--- a/src/tapis-ui/_common/ConfirmModal/ConfirmModal.tsx
+++ b/src/tapis-ui/_common/ConfirmModal/ConfirmModal.tsx
@@ -5,6 +5,7 @@ import { SubmitWrapper } from 'tapis-ui/_wrappers';
 
 type ConfirmModalProps = {
   toggle: () => void;
+  title?: string;
   message?: string;
   onConfirm: () => void;
   isLoading: boolean;
@@ -15,6 +16,7 @@ type ConfirmModalProps = {
 
 const ConfirmModal: React.FC<ConfirmModalProps> = ({
   toggle,
+  title,
   message,
   onConfirm,
   isLoading,
@@ -25,7 +27,7 @@ const ConfirmModal: React.FC<ConfirmModalProps> = ({
   return (
     <GenericModal
       toggle={toggle}
-      title="Confirm"
+      title={title || 'Confirm'}
       body={message || 'Are you sure you want to continue?'}
       footer={
         <SubmitWrapper