diff --git a/tests/drivers/adc/adc_accuracy_test/boards/frdm_mcxc444.conf b/tests/drivers/adc/adc_accuracy_test/boards/frdm_mcxc444.conf
new file mode 100644
index 00000000000..3201f7a9cc4
--- /dev/null
+++ b/tests/drivers/adc/adc_accuracy_test/boards/frdm_mcxc444.conf
@@ -0,0 +1 @@
+CONFIG_ADC_MCUX_ADC16_VREF_ALTERNATE=y
diff --git a/tests/drivers/adc/adc_accuracy_test/boards/frdm_mcxc444.overlay b/tests/drivers/adc/adc_accuracy_test/boards/frdm_mcxc444.overlay
new file mode 100644
index 00000000000..69bc918b532
--- /dev/null
+++ b/tests/drivers/adc/adc_accuracy_test/boards/frdm_mcxc444.overlay
@@ -0,0 +1,29 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright 2024 NXP
+ */
+
+ /* Please connect voltage reference to J4 pin 1 to run the test. */
+
+/ {
+	zephyr,user {
+		io-channels = <&adc0 0>;
+		reference_mv = <1650>;
+		expected_accuracy = <32>;
+	};
+};
+
+&adc0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_VDD_1";
+		zephyr,vref-mv = <3300>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+};
diff --git a/tests/drivers/adc/adc_accuracy_test/testcase.yaml b/tests/drivers/adc/adc_accuracy_test/testcase.yaml
index 8c79c499d75..44ec00bcd06 100644
--- a/tests/drivers/adc/adc_accuracy_test/testcase.yaml
+++ b/tests/drivers/adc/adc_accuracy_test/testcase.yaml
@@ -19,6 +19,7 @@ tests:
       - frdm_kl25z
       - ek_ra8m1
       - frdm_mcxc242
+      - frdm_mcxc444
       - nrf52840dk/nrf52840
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54h20dk/nrf54h20/cpuapp
diff --git a/tests/drivers/adc/adc_api/boards/frdm_mcxc444.conf b/tests/drivers/adc/adc_api/boards/frdm_mcxc444.conf
new file mode 100644
index 00000000000..3201f7a9cc4
--- /dev/null
+++ b/tests/drivers/adc/adc_api/boards/frdm_mcxc444.conf
@@ -0,0 +1 @@
+CONFIG_ADC_MCUX_ADC16_VREF_ALTERNATE=y
diff --git a/tests/drivers/adc/adc_api/boards/frdm_mcxc444.overlay b/tests/drivers/adc/adc_api/boards/frdm_mcxc444.overlay
new file mode 100644
index 00000000000..ac768783a82
--- /dev/null
+++ b/tests/drivers/adc/adc_api/boards/frdm_mcxc444.overlay
@@ -0,0 +1,34 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright 2024 NXP
+ */
+
+/ {
+	zephyr,user {
+		io-channels = <&adc0 0>, <&adc0 3>;
+	};
+};
+
+&adc0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_VDD_1";
+		zephyr,vref-mv = <3300>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+
+	channel@3 {
+		reg = <3>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_VDD_1";
+		zephyr,vref-mv = <3300>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+};