diff --git a/components/zendesk/actions/set-custom-ticket-fields/set-custom-ticket-fields.mjs b/components/zendesk/actions/set-custom-ticket-fields/set-custom-ticket-fields.mjs
new file mode 100644
index 0000000000000..ff04d705cfa88
--- /dev/null
+++ b/components/zendesk/actions/set-custom-ticket-fields/set-custom-ticket-fields.mjs
@@ -0,0 +1,80 @@
+import app from "../../zendesk.app.mjs";
+import { parseObject } from "../../common/utils.mjs";
+import { ConfigurationError } from "@pipedream/platform";
+
+export default {
+  key: "zendesk-set-custom-ticket-fields",
+  name: "Set Custom Ticket Fields",
+  description: "Sets one or more custom field values on a ticket. [See the documentation](https://developer.zendesk.com/api-reference/ticketing/tickets/tickets/#update-ticket).",
+  type: "action",
+  version: "0.0.1",
+  props: {
+    app,
+    ticketId: {
+      propDefinition: [
+        app,
+        "ticketId",
+      ],
+    },
+    customFields: {
+      type: "string[]",
+      label: "Custom Fields",
+      description: "Array of custom field objects. Each item should be formatted as `{\"id\": \"field_id\", \"value\": \"field_value\"}`. Example: `{\"id\": \"23129751115165\", \"value\": \"ABCDE\"}`",
+    },
+    customSubdomain: {
+      propDefinition: [
+        app,
+        "customSubdomain",
+      ],
+    },
+  },
+  methods: {
+    updateTicket({
+      ticketId, ...args
+    } = {}) {
+      return this.app.update({
+        path: `/tickets/${ticketId}`,
+        ...args,
+      });
+    },
+  },
+  async run({ $: step }) {
+    const {
+      ticketId,
+      customFields,
+      customSubdomain,
+    } = this;
+
+    // Parse custom fields from string array to objects
+    const parsedCustomFields = parseObject(customFields);
+
+    if (!Array.isArray(parsedCustomFields)) {
+      throw new ConfigurationError("Custom Fields must be an array of custom field objects");
+    }
+
+    // Validate custom fields structure
+    parsedCustomFields.forEach((field, index) => {
+      if (!field.id) {
+        throw new ConfigurationError(`Custom field at index ${index} is missing required "id" property`);
+      }
+      if (field.value === undefined) {
+        throw new ConfigurationError(`Custom field at index ${index} is missing required "value" property`);
+      }
+    });
+
+    const response = await this.updateTicket({
+      step,
+      ticketId,
+      customSubdomain,
+      data: {
+        ticket: {
+          custom_fields: parsedCustomFields,
+        },
+      },
+    });
+
+    step.export("$summary", `Successfully updated ${parsedCustomFields.length} custom field(s) on ticket ${response.ticket.id}`);
+
+    return response;
+  },
+};
diff --git a/components/zendesk/common/utils.mjs b/components/zendesk/common/utils.mjs
new file mode 100644
index 0000000000000..c2b75bdc360c0
--- /dev/null
+++ b/components/zendesk/common/utils.mjs
@@ -0,0 +1,25 @@
+export const parseObject = (obj) => {
+  if (!obj) {
+    return {};
+  }
+  if (typeof obj === "string") {
+    try {
+      return JSON.parse(obj);
+    } catch {
+      return obj;
+    }
+  }
+  if (Array.isArray(obj)) {
+    return obj.map(parseObject);
+  }
+  if (typeof obj === "object") {
+    return Object.fromEntries(Object.entries(obj).map(([
+      key,
+      value,
+    ]) => [
+      key,
+      parseObject(value),
+    ]));
+  }
+  return obj;
+};
diff --git a/components/zendesk/package.json b/components/zendesk/package.json
index 58a97676945b3..2c7d0f93f99f7 100644
--- a/components/zendesk/package.json
+++ b/components/zendesk/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@pipedream/zendesk",
-  "version": "0.9.0",
+  "version": "0.10.0",
   "description": "Pipedream Zendesk Components",
   "main": "zendesk.app.mjs",
   "keywords": [