diff --git a/boards/seeedstudio-gd32/Kconfig b/boards/seeedstudio-gd32/Kconfig
index 46c9ea8230..24879583ac 100644
--- a/boards/seeedstudio-gd32/Kconfig
+++ b/boards/seeedstudio-gd32/Kconfig
@@ -14,6 +14,7 @@ config BOARD_SEEEDSTUDIO_GD32
     select CPU_MODEL_GD32VF103VBT6
     select BOARD_HAS_HXTAL
     select BOARD_HAS_LXTAL
+    select HAS_PERIPH_ADC
     select HAS_PERIPH_I2C
     select HAS_PERIPH_PWM
     select HAS_PERIPH_SPI
diff --git a/boards/seeedstudio-gd32/Makefile.features b/boards/seeedstudio-gd32/Makefile.features
index f1a4d92d35..4972cfd7da 100644
--- a/boards/seeedstudio-gd32/Makefile.features
+++ b/boards/seeedstudio-gd32/Makefile.features
@@ -1,6 +1,7 @@
 CPU_MODEL = gd32vf103vbt6
 
 # Put defined MCU peripherals here (in alphabetical order)
+FEATURES_PROVIDED += periph_adc
 FEATURES_PROVIDED += periph_i2c
 FEATURES_PROVIDED += periph_pwm
 FEATURES_PROVIDED += periph_spi
diff --git a/boards/seeedstudio-gd32/doc.txt b/boards/seeedstudio-gd32/doc.txt
index 2419086fa0..4fa5666de9 100644
--- a/boards/seeedstudio-gd32/doc.txt
+++ b/boards/seeedstudio-gd32/doc.txt
@@ -37,7 +37,7 @@ on-board components:
 | Timers      | 5 x 16-bit timer                       |   yes     |
 | RTC         | 1 x 32-bit counter, 20-bit prescaler   |   yes     |
 | WDT         | 2 x 12-bit counter, 3-bit prescaler    |   yes     |
-| ADC         | 2 x 12-bit units, 16 channels, 1 Msps  |   no      |
+| ADC         | 2 x 12-bit units, 16 channels @ 1 Msps |   yes     |
 | DAC         | 2 x 12-bit channel                     |   no      |
 | UART        | 2                                      |   yes     |
 | USART       | 3                                      |   yes     |
@@ -65,6 +65,9 @@ MCU pins and their configuration in RIOT.
 | MCU Pin | MCU Peripheral | RIOT Peripheral  | Board Function | Remark                       |
 |:--------|:---------------|:-----------------|:---------------|:-----------------------------|
 | PA0     | BOOT0          | BTN0             | KEY1           |                              |
+| PA1     | ADC01_IN1      | ADC_LINE(0)      |                |                              |
+| PA2     | ADC01_IN2      | ADC_LINE(1)      |                |                              |
+| PA3     | ADC01_IN3      | ADC_LINE(2)      |                |                              |
 | PA9     | USART0 TX      | UART_DEV(0) TX   | UART TX        |                              |
 | PA10    | USART0 RX      | UART_DEV(0) RX   | UART RX        |                              |
 | PA4     | SPI1 CS        | SPI_DEV(1) CS    |                |                              |
@@ -84,7 +87,15 @@ MCU pins and their configuration in RIOT.
 | PB13    | SPI0 SCLK      | SPI_DEV(0) SCLK  |                |                              |
 | PB14    | SPI0 MISO      | SPI_DEV(0) MISO  |                |                              |
 | PB15    | SPI0 MOSI      | SPI_DEV(0) MOSI  |                |                              |
+| PC0     | ADC01_IN10     | ADC_LINE(3)      |                |                              |
+| PC1     | ADC01_IN11     | ADC_LINE(4)      |                |                              |
+| PC2     | ADC01_IN12     | ADC_LINE(5)      |                |                              |
+| PC3     | ADC01_IN13     | ADC_LINE(6)      |                |                              |
+| PC4     | ADC01_IN14     | ADC_LINE(7)      |                |                              |
+| PC5     | ADC01_IN15     | ADC_LINE(8)      |                |                              |
 | PC13    |                | BTN1             | KEY2           |                              |
+| -       | ADC01_IN16     | ADC_LINE(9)      |                | internal Temperature channel |
+| -       | ADC01_IN17     | ADC_LINE(10)     |                | internal VFEF channel        |
 
 ## Flashing the Device
 
diff --git a/boards/seeedstudio-gd32/include/periph_conf.h b/boards/seeedstudio-gd32/include/periph_conf.h
index 9a807a2434..e93dfcd163 100644
--- a/boards/seeedstudio-gd32/include/periph_conf.h
+++ b/boards/seeedstudio-gd32/include/periph_conf.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2020 Koen Zandberg <koen@bergzand.net>
+ *               2023 Gunar Schorcht <gunar@schorcht.net>
  *
  * This file is subject to the terms and conditions of the GNU Lesser
  * General Public License v2.1. See the file LICENSE in the top level
@@ -14,6 +15,7 @@
  * @brief       Board specific definitions for the SeeedStudio GD32 RISC-V board
  *
  * @author      Koen Zandberg <koen@bergzand.net>
+ * @author      Gunar Schorcht <gunar@schorcht.net>
  */
 
 #ifndef PERIPH_CONF_H
@@ -45,6 +47,29 @@
 extern "C" {
 #endif
 
+/**
+ * @name    ADC configuration
+ * @{
+ */
+static const adc_conf_t adc_config[] = {
+    { .pin = GPIO_PIN(PORT_A, 1), .dev = 0, .chan = 1 },
+    { .pin = GPIO_PIN(PORT_A, 2), .dev = 0, .chan = 2 },
+    { .pin = GPIO_PIN(PORT_A, 3), .dev = 0, .chan = 3 },
+    { .pin = GPIO_PIN(PORT_C, 0), .dev = 0, .chan = 10 },
+    { .pin = GPIO_PIN(PORT_C, 1), .dev = 0, .chan = 11 },
+    { .pin = GPIO_PIN(PORT_C, 2), .dev = 0, .chan = 12 },
+    { .pin = GPIO_PIN(PORT_C, 3), .dev = 0, .chan = 13 },
+    { .pin = GPIO_PIN(PORT_C, 4), .dev = 0, .chan = 14 },
+    { .pin = GPIO_PIN(PORT_C, 5), .dev = 0, .chan = 15 },
+    /* ADC Temperature channel */
+    { .pin = GPIO_UNDEF, .dev = 0, .chan = 16 },
+    /* ADC VREF channel */
+    { .pin = GPIO_UNDEF, .dev = 0, .chan = 17 },
+};
+
+#define ADC_NUMOF           ARRAY_SIZE(adc_config)
+/** @} */
+
 /**
  * @name   PWM configuration
  * @{