| K7 Computing 18004190077 |
| Kajaria Vitro Tiles 1800112992 |
| Kanpur Nagar Nigam 18001805124 |
| Karbonn Mobiles 1800116666 18001024666 |
| Karnataka Bank 18004251444 |
| Karnataka Tourism Help Desk 18004251414 |
| Karur Vysya Bank (KVB) 18001021916 |
| Karvy 18004258282 18004258283 18003454001 |
| Karvy Computershare 18003454001 |
| Kashi Jewellers Kanpur 18001234653 |
| Kaspersky 18004250052 |
| Kawachi 1800220000 |
| Kay Sera Sera 18001020204 |
| Kaya Skin Clinic 1800225292 |
| KBC 5252525/55456 KBC D 31 M |
| Keltron 18004259696 |
| Kelvinator 18004194040 |
| Kenstar 18004194040 |
| Kent Mineral RO 18001001000 |
| Kerala Taxes 18004254777 |
| Kerala Tourism 18004254747 1800 444 747 |
| Kesari 1800221100 |
| KESCO 18001805111 |
| Kick & Buy 18001025425 |
| Kidzee 18002098080 |
| Kimberly Clark Professional 18002338888 |
| King Club 18002093030 |
| KingFisher – 18002093030 18001800101 18004257008 18002333131 |
| Kingfisher Training Academy (KTA) 18002093800 |
| Kingfisher Xpress 18002091222 |
| Kingston Technology Corporation 18004254515 |
| Kisan Call Centre (KCC) 18001801551 |
| Kit Kat 18002661122 |
| KLM 18001800044 |
| KobianKare 18004255464 |
| Kodak 18004256325 1800224949 |
| Kodak India – 1800 22 8877 |
| Kohler 18001032244 |
| KONE Elevator – 1800 444 666 |
| Kores India 1800 22 9777 |
| Koryo 18004257722 |
| Kotak Credit Cards 1800116022 (North India) and 1800226022 (Rest of India) |
| Kotak Life Insurance 1800228081, 18002098800 |
| Kotak Mahindra Bank 1800226022 |
| Kotak Mutual Fund 1800222626 |
| Kreeda Games India 18001033088 |
| K Sera Sera Production 18001020204 |
| Kumarakom Lake Resort 1800445030 |
| Kuoni Academy 1800223344, 18001027788 |
| Kuoni Holidays 1800221008 |
| Kurlon 18004250404 1800 44 0404 |
| Kyocera Wireless Online support 1800121214 |
