diff --git a/esphome/components/atc_mithermometer/__init__.py b/esphome/components/atc_mithermometer/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/esphome/components/atc_mithermometer/atc_mithermometer.cpp b/esphome/components/atc_mithermometer/atc_mithermometer.cpp
new file mode 100644
index 0000000000..08e1cc3207
--- /dev/null
+++ b/esphome/components/atc_mithermometer/atc_mithermometer.cpp
@@ -0,0 +1,63 @@
+#include "atc_mithermometer.h"
+#include "esphome/core/log.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+
+namespace esphome {
+namespace atc_mithermometer {
+
+static const char *TAG = "atc_mithermometer";
+
+void ATCMiThermometer::dump_config() {
+  ESP_LOGCONFIG(TAG, "ATC MiThermometer");
+  LOG_SENSOR("  ", "Temperature", this->temperature_);
+  LOG_SENSOR("  ", "Humidity", this->humidity_);
+  LOG_SENSOR("  ", "Battery Level", this->battery_level_);
+}
+
+bool ATCMiThermometer::parse_device(const esp32_ble_tracker::ESPBTDevice &device) {
+  if (device.address_uint64() != this->address_) {
+    ESP_LOGVV(TAG, "parse_device(): unknown MAC address.");
+    return false;
+  }
+  ESP_LOGVV(TAG, "parse_device(): MAC address %s found.", device.address_str().c_str());
+
+  bool success = false;
+  for (auto &service_data : device.get_service_datas()) {
+    auto res = xiaomi_ble::parse_xiaomi_header(service_data);
+    if (!res.has_value()) {
+      continue;
+    }
+    if (res->is_duplicate) {
+      continue;
+    }
+    if (res->has_encryption) {
+      ESP_LOGVV(TAG, "parse_device(): payload decryption is currently not supported on this device.");
+      continue;
+    }
+    if (!(xiaomi_ble::parse_xiaomi_message(service_data.data, *res))) {
+      continue;
+    }
+    if (!(xiaomi_ble::report_xiaomi_results(res, device.address_str()))) {
+      continue;
+    }
+    if (res->temperature.has_value() && this->temperature_ != nullptr)
+      this->temperature_->publish_state(*res->temperature);
+    if (res->humidity.has_value() && this->humidity_ != nullptr)
+      this->humidity_->publish_state(*res->humidity);
+    if (res->battery_level.has_value() && this->battery_level_ != nullptr)
+      this->battery_level_->publish_state(*res->battery_level);
+    success = true;
+  }
+
+  if (!success) {
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace atc_mithermometer
+}  // namespace esphome
+
+#endif
diff --git a/esphome/components/atc_mithermometer/atc_mithermometer.h b/esphome/components/atc_mithermometer/atc_mithermometer.h
new file mode 100644
index 0000000000..fb3a48d59b
--- /dev/null
+++ b/esphome/components/atc_mithermometer/atc_mithermometer.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/esp32_ble_tracker/esp32_ble_tracker.h"
+#include "esphome/components/xiaomi_ble/xiaomi_ble.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+
+namespace esphome {
+namespace atc_mithermometer {
+
+class ATCMiThermometer : public Component, public esp32_ble_tracker::ESPBTDeviceListener {
+ public:
+  void set_address(uint64_t address) { address_ = address; };
+
+  bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override;
+  void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::DATA; }
+  void set_temperature(sensor::Sensor *temperature) { temperature_ = temperature; }
+  void set_humidity(sensor::Sensor *humidity) { humidity_ = humidity; }
+  void set_battery_level(sensor::Sensor *battery_level) { battery_level_ = battery_level; }
+
+ protected:
+  uint64_t address_;
+  sensor::Sensor *temperature_{nullptr};
+  sensor::Sensor *humidity_{nullptr};
+  sensor::Sensor *battery_level_{nullptr};
+};
+
+}  // namespace atc_mithermometer
+}  // namespace esphome
+
+#endif
diff --git a/esphome/components/atc_mithermometer/sensor.py b/esphome/components/atc_mithermometer/sensor.py
new file mode 100644
index 0000000000..5a6a2039d5
--- /dev/null
+++ b/esphome/components/atc_mithermometer/sensor.py
@@ -0,0 +1,39 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor, esp32_ble_tracker
+from esphome.const import CONF_BATTERY_LEVEL, CONF_HUMIDITY, CONF_MAC_ADDRESS, CONF_TEMPERATURE, \
+    UNIT_CELSIUS, ICON_THERMOMETER, UNIT_PERCENT, ICON_WATER_PERCENT, ICON_BATTERY, CONF_ID
+
+DEPENDENCIES = ['esp32_ble_tracker']
+AUTO_LOAD = ['xiaomi_ble']
+
+atc_mithermometer_ns = cg.esphome_ns.namespace('atc_mithermometer')
+ATCMiThermometer = atc_mithermometer_ns.class_('ATCMiThermometer',
+                                               esp32_ble_tracker.ESPBTDeviceListener,
+                                               cg.Component)
+
+CONFIG_SCHEMA = cv.Schema({
+    cv.GenerateID(): cv.declare_id(ATCMiThermometer),
+    cv.Required(CONF_MAC_ADDRESS): cv.mac_address,
+    cv.Optional(CONF_TEMPERATURE): sensor.sensor_schema(UNIT_CELSIUS, ICON_THERMOMETER, 1),
+    cv.Optional(CONF_HUMIDITY): sensor.sensor_schema(UNIT_PERCENT, ICON_WATER_PERCENT, 0),
+    cv.Optional(CONF_BATTERY_LEVEL): sensor.sensor_schema(UNIT_PERCENT, ICON_BATTERY, 0),
+}).extend(esp32_ble_tracker.ESP_BLE_DEVICE_SCHEMA).extend(cv.COMPONENT_SCHEMA)
+
+
+def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    yield cg.register_component(var, config)
+    yield esp32_ble_tracker.register_ble_device(var, config)
+
+    cg.add(var.set_address(config[CONF_MAC_ADDRESS].as_hex))
+
+    if CONF_TEMPERATURE in config:
+        sens = yield sensor.new_sensor(config[CONF_TEMPERATURE])
+        cg.add(var.set_temperature(sens))
+    if CONF_HUMIDITY in config:
+        sens = yield sensor.new_sensor(config[CONF_HUMIDITY])
+        cg.add(var.set_humidity(sens))
+    if CONF_BATTERY_LEVEL in config:
+        sens = yield sensor.new_sensor(config[CONF_BATTERY_LEVEL])
+        cg.add(var.set_battery_level(sens))