| Kamatchi | | - | Tamil | |
| Kanchana | | - | Tamil | |
| Kannan | | - | Tamil | |
| Karthik | | - | Tamil, Indian, Telugu, Malayalam | |
| Karthika | | - | Tamil, Indian, Malayalam | |
| Karthikeyan | | - | Tamil, Hinduism | |
| Kasi | | - | Indian, Telugu, Tamil | |
| Kavitha | | - | Indian, Telugu, Tamil, Kannada | |
| Kiran | | - | Indian, Hindi, Marathi, Kannada, Telugu, Malayalam, Tamil, Gujarati, Nepali, Urdu | |
| Kishor | | - | Indian, Hindi, Marathi, Tamil, Telugu, Nepali | |
| Kishore | | - | Indian, Hindi, Marathi, Tamil, Telugu | |
| Krishna | | KRISH-na (Hinduism) | Hinduism, Indian, Hindi, Marathi, Bengali, Gujarati, Telugu, Tamil, Kannada, Malayalam, Nepali | |
| Kumar | | - | Indian, Hindi, Marathi, Bengali, Assamese, Odia, Gujarati, Punjabi, Tamil, Telugu, Malayalam, Kannad | |
| Kumaran | | - | Tamil, Indian, Malayalam | |
| Lakshman | | - | Indian, Hindi, Telugu, Tamil, Marathi | |