GameObject.FindWithTag
static function FindWithTag(tag: string): GameObject;
static GameObject FindWithTag(string tag);
static def FindWithTag(tag as string) as GameObject
Parameters

tag The tag to search for.
Description

Returns one active GameObject tagged tag. Returns null if no GameObject was found.

Tags must be declared in the tag manager before using them. A UnityException will be thrown if the tag does not exist or an empty string or null is passed as the tag.
	var respawnPrefab : GameObject;
	var respawn: GameObject;
	
	// Instantiates respawnPrefab at the location 
	// of the game object with tag "Respawn"
     // This example assumes that a game object is tagged with "Respawn"
	function Start()
	{
		if (respawn==null)
			respawn = GameObject.FindWithTag ("Respawn");
		Instantiate (respawnPrefab, respawn.transform.position, respawn.transform.rotation);
	}
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public GameObject respawnPrefab;
    public GameObject respawn;
    void Start() {
        if (respawn == null)
            respawn = GameObject.FindWithTag("Respawn");
        
        Instantiate(respawnPrefab, respawn.transform.position, respawn.transform.rotation) as GameObject;
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public respawnPrefab as GameObject

	public respawn as GameObject

	def Start() as void:
		if respawn == null:
			respawn = GameObject.FindWithTag('Respawn')
		(Instantiate(respawnPrefab, respawn.transform.position, respawn.transform.rotation) as GameObject)