diff --git a/esphome/components/esp32_ble/ble_advertising.cpp b/esphome/components/esp32_ble/ble_advertising.cpp
index 31b1f4c383..2083bf5f08 100644
--- a/esphome/components/esp32_ble/ble_advertising.cpp
+++ b/esphome/components/esp32_ble/ble_advertising.cpp
@@ -42,6 +42,11 @@ void BLEAdvertising::remove_service_uuid(ESPBTUUID uuid) {
                                  this->advertising_uuids_.end());
 }
 
+void BLEAdvertising::set_manufacturer_data(uint8_t *data, uint16_t size) {
+  this->advertising_data_.p_manufacturer_data = data;
+  this->advertising_data_.manufacturer_len = size;
+}
+
 void BLEAdvertising::start() {
   int num_services = this->advertising_uuids_.size();
   if (num_services == 0) {
diff --git a/esphome/components/esp32_ble/ble_advertising.h b/esphome/components/esp32_ble/ble_advertising.h
index 01e2ba1295..079bd6c14c 100644
--- a/esphome/components/esp32_ble/ble_advertising.h
+++ b/esphome/components/esp32_ble/ble_advertising.h
@@ -20,6 +20,7 @@ class BLEAdvertising {
   void remove_service_uuid(ESPBTUUID uuid);
   void set_scan_response(bool scan_response) { this->scan_response_ = scan_response; }
   void set_min_preferred_interval(uint16_t interval) { this->advertising_data_.min_interval = interval; }
+  void set_manufacturer_data(uint8_t *data, uint16_t size);
 
   void start();
   void stop();