- Xavier Chicago
- Xoca World LTD.
- Xodus International LLC
- Xpert Valet Parking INC.
- Xtramanager
- Xtreme Parking Services, LLC
- Xu Deng
- Xuyun Zheng
- Xzotic Glam Boutique
- Y
- Y U/e N Studio
- Y&j Beauty Spa
- Ya Skin Studio LLC
- Yamato Foot Massage
- Yardbird Southern Table & Bar
- Yasemi Chicago
- Yasemin Tunc Coaching, LLC
- Yaya Mas Greek Kuzina
- Ycharts
- Yellowcake Shop
- Yk Salon
- Yoga Loft Chicago
- Yoga Now
- Yoga2.0, LLC
- Yolk
- Yolk
- Yolk Cafe
- You Dirty Dog
- Your Little Shop
- Youth For A Better Future
- Youthfully Living
- Yu-yubu
- Yujo Matcha, LLC
- Yunqi Wang
- Yurman Retail North America
- Yves Saint Laurent
- Z.a.s. Consulting, INC.
- Zachary Wilhelm
- Zacuto, LLC
- Zanies Comedy Club
- Zara Usa, INC.
- Zarella Pizzeria & Taverna
- Zaven / Lepetit Paris
- Zazas Pizzeria
- Zazu Salon
- Zebra Lounge
- Zed 451
- Zen & Now
- Zerep, LLC
- Zero 2 Z
- Zeza Hair Salon & Spa
- Zg Gallery INC
- Zing Zang, LLC
- Ziven Crist Entertainment
- Zora Digital, LLC
- Zrs Management, LLC
- Zs Associates INC.