diff --git a/builder/ncloud/config.go b/builder/ncloud/config.go
index abaca35c3..5e713d44d 100644
--- a/builder/ncloud/config.go
+++ b/builder/ncloud/config.go
@@ -22,7 +22,7 @@ type Config struct {
 	ServerImageName                   string `mapstructure:"server_image_name"`
 	ServerImageDescription            string `mapstructure:"server_image_description"`
 	UserData                          string `mapstructure:"user_data"`
-	UserDataFile                          string `mapstructure:"user_data_file"`
+	UserDataFile                      string `mapstructure:"user_data_file"`
 	BlockStorageSize                  int    `mapstructure:"block_storage_size"`
 	Region                            string `mapstructure:"region"`
 	AccessControlGroupConfigurationNo string `mapstructure:"access_control_group_configuration_no"`
@@ -92,6 +92,14 @@ func NewConfig(raws ...interface{}) (*Config, []string, error) {
 		}
 	}
 
+	if c.UserData != "" && c.UserDataFile != "" {
+		errs = append(errs, fmt.Errorf("Only one of user_data or user_data_file can be specified."))
+	} else if c.UserDataFile != "" {
+		if _, err := os.Stat(c.UserDataFile); err != nil {
+			errs = append(errs, fmt.Errorf("user_data_file not found: %s", c.UserDataFile))
+		}
+	}
+
 	if c.UserData != "" && len(c.UserData) > 21847 {
 		errs = packer.MultiErrorAppend(errs, errors.New("If user_data field is set, length of UserData should be max 21847"))
 	}
diff --git a/builder/ncloud/step_create_server_instance.go b/builder/ncloud/step_create_server_instance.go
index d7decd4d8..3a842f899 100644
--- a/builder/ncloud/step_create_server_instance.go
+++ b/builder/ncloud/step_create_server_instance.go
@@ -3,6 +3,7 @@ package ncloud
 import (
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"log"
 	"time"
 
@@ -49,6 +50,15 @@ func (s *StepCreateServerInstance) createServerInstance(loginKeyName string, zon
 		reqParams.UserData = s.Config.UserData
 	}
 
+	if s.Config.UserDataFile != "" {
+		contents, err := ioutil.ReadFile(s.Config.UserDataFile)
+		if err != nil {
+			return "", fmt.Errorf("Problem reading user data file: %s", err)
+		}
+
+		reqParams.UserData = string(contents)
+	}
+
 	if s.Config.AccessControlGroupConfigurationNo != "" {
 		reqParams.AccessControlGroupConfigurationNoList = []string{s.Config.AccessControlGroupConfigurationNo}
 	}