Back to All Events

21st Annual Mayhem and Madness Halloween Bash


  • Upstairs, Hennessey's 25 Union Street Boston, MA 02108 United States (map)

The BostonYPA Mayhem and Madness Halloween Bash has sold out every single year since its inception, join us , for a spooktakular Halloween!

Dance all night to the music of our favorite DJ Wali Shakir!

Costume Contest:

  • $200 CASH  prize for the the BEST COSTUME.

  • Runner up prize packs for each category: Most Original, Sexiest, Best Couple or Group

  • Winners announced at Midnight

What’s Included:

  • 1 Drink ticket when you arrive by 11PM

  • Appetizers at 9pm, replenished at 10pm

  • Glow sticks, party favors, and a Cauldron full of candy.

Ticket prices increase as we near capacity. Early Registration Discount currently available.

This event is 21+, no exceptions. 

Ticket sales are final. 

Earlier Event: October 22
Networking Night for Young Professionals
Later Event: November 12
After 5 Social