Pratap Singh, Partap Singh, Pratab Singh, Partab Singh, Pratapsingh, or Partapsingh may refer to (in chronological order):
- Maharana Pratap, Pratap Singh I of Mewar (1540–1597), Rajasthan
- Pratap Singh of Thanjavur (died 1763), King of Thanjavur Maratha kingdom from 1739–1763
- Pratap Singh II (1724–1753), Maharana of Mewar, India, 1751–1754
- Pratap Singh Shah (1751-1777), king of Nepal
- Pratap Singh of Jaipur (1764–1803), ruler of Jaipur 1778–1803
- Pratap Singh, Raja of Satara (1793–1847), Nominal King of Maratha Empire, Satara - 1808–1839
- Pratap Singh (Sikh prince) (1831–1843), heir apparent of the Sikh Empire
- Pratap Singh of Idar (1845–1922), Maharaja of Idar, India, 1902–1911
- Pratap Singh of Jammu and Kashmir (1848–1925), Maharaja of Jammu and Kashmir
- Pratap Singh Giani (1855-1920), Sikh academic
- Pratap Singh of Kapurthala (1871–1911), Punjabi politician and scholar
- Partap Singh Kairon (1901-1965), Chief Minister of Panjab
- Partap Singh (1904–1984), Sikh priest and Jathedar of Akal Takht