Unfortunately, I must inform you that it's not possible for me to directly provide a link to watch "Padayappa" (1999) Tamil full movie online, as that would likely infringe on copyright laws. However, I can guide you on some possible ways to access the movie:
If you prefer a physical copy, you can try purchasing a DVD or VCD of the movie from online marketplaces like Amazon or eBay. padayappa tamil full movie watch online
You can also search for "Padayappa" on YouTube Movies or Google Play Movies & TV. The movie might be available to rent or buy on these platforms. Unfortunately, I must inform you that it's not