Here are some notable decoration companies in Istanbul that can help with a variety of interior design and wall decoration needs:

Interior Design and Decoration Companies

1. Autoban: A well-known design studio that offers comprehensive interior design services, including wall decorations. They are famous for their unique and modern designs.
2. Kontra Architecture: Specializes in innovative and contemporary designs, focusing on creating unique and stylish interiors.
3. Zeray Interiors: Offers a full range of interior design services, including bespoke wall decorations. Known for their luxurious and elegant designs.
4. The House Hotel Design Group: Provides high-end design and decoration services, often incorporating elements of Turkish heritage into their designs.
5. Atölye 4M: A multidisciplinary design studio that offers personalized decoration solutions, including custom-made wall art and installations.

Custom Wall Art and Murals

1. Nishart: Specializes in custom wall art, murals, and decorative panels. They offer personalized designs tailored to your specific preferences.
2. Wallart Istanbul: Offers a wide range of custom wall decorations, including murals, wallpapers, and 3D wall panels.
3. Artleove: Focuses on contemporary art and custom wall decorations, providing unique pieces to enhance any interior.

Traditional Turkish Decoration

1. Erisim Sanat: Specializes in traditional Turkish art and decorations, including Iznik tiles, calligraphy, and other heritage pieces.
2. Turkish Arts Studio: Offers a range of traditional Turkish wall decorations, including hand-painted ceramics, tiles, and miniatures.

Where to Find Them

• Online Presence: Most of these companies have websites and social media profiles where you can view their portfolios and get in touch with them.
• Design Fairs and Exhibitions: Istanbul hosts several design fairs and exhibitions where you can meet these companies and see their work firsthand.
• Showrooms: Many of these companies have showrooms in Istanbul where you can visit and see their designs in person.

Would you like contact information or more details about any specific company?