Direct Translation:
* Nagkakaisang Bansa (United Nations) - This is a simple and direct translation, good for clarity.
Emphasizing Unity:
* Sama-sama, Para sa Kapayapaan (Together, for Peace)
* Isang Mundo, Isang Pamilya (One World, One Family)
* Magkaisa Para sa Kinabukasan (Unite for the Future)
Focusing on Action:
* Gawaing Sama-sama, Mas Magandang Mundo (Working Together, a Better World)
* Para sa Isang Mas Mabuting Bukas, Magkaisa Tayo (For a Better Tomorrow, Let's Unite)
* Tulong-tulong, Magkaisa sa Pag-unlad (Helping Each Other, Uniting for Progress)
Considerations:
* Audience: Who are you targeting with this slogan?
* Purpose: What is the message you want to convey?
* Impact: How will the slogan resonate with your audience?
You can also consider using a specific UN goal as inspiration for your slogan. Ultimately, the best Tagalog slogan for the United Nations will depend on your specific needs and goals.