Did any Indian writers/authors ever use a pen name?

Yes, several Indian writers have used pen names. Here are a few examples:

1. Rabindranath Tagore: He is known to have used the pen name BhanuSimha. Additionally, he published works under his sister-in-law's name, which were mistakenly attributed to her1.

2. Sarat Chandra Chattopadhyay: He wrote under the pen name Anila Devi, believed by many to be his sister4.

3. V.V. Shirvadkar: Known as Kusumagraj, he used this name to express his softer side in writing1.

4. Govind Karandikar: He wrote under the pen name Vinda, initially as a prank after his wife suggested he submit his work as a woman poet1.

5. Vasudhendra: A Kannada author who used the pen name Shanmuka S when writing about sensitive topics like homosexuality to avoid backlash2.

6. Vaidehi (Janaki Srinivas Murthy): A popular Kannada writer who adopted her pen name after it was given by an editor, allowing her to write freely without fear of judgment2.

7. Kuvempu (Kuppalli Venkatappa Puttappa): A renowned Kannada poet and writer who used the pen name Kuvempu2.