A List of authentic cricketer twitter accounts (time, logic and twitter resources are used to create the list)(in Alphabetical order):

Indian Cricketers:

Amit Mishra

Gautam Gambhir

Harbhajan Singh

Ishant Sharma

Mahendra Singh Dhoni

Murali Kartik

Rohit Sharma

Rudra Pratap Singh

Sachin Tendulkar

Sourav Ganguly

S Sreesanth

Suresh Raina

Virender Sehwag

Yuvraj Singh

Zaheer Khan

Some Cricket related twitter-ers that might interest you:

Lalit Modi

Sundar Raman

Celebrities with Cricket connection:

Priety Zinta

Shahrukh Khan

Shilpa Shetty

Vijay Mallya

Politicians with Cricket connection:

Shashi Tharoor (He said he had no IPL Kochi connection, but we knew he had :))

[Keep checking the Lists, it'll be updated often]