Shiv Sena was a Marathi regionalist and Hindu nationalist political party that split in 2022 into:
Shiv Sena (2022–present), formed by a faction led by Eknath Shinde Shiv Sena (UBT), formed by a faction led by Uddhav Balasaheb Thackeray
Shiv Sena or Shivsena may also refer to various political parties:
Nepal Shivsena, a Hindutva political party founded in 1999 Shivsena Nepal, a Hindu political party founded in 1990