| klorid | chloride |
| Klorit | Chlorite group |
| klormonofluorid | chlorine monofluoride |
| klorofluorkarbon | CFC |
| kloroform | chloroform |
| klorofyll | chlorophyll |
| Kloroplast | Chloroplast |
| klororganisk förening | organochlorine compound |
| kloros | chlorosis |
| klorpentafluorid | chlorine pentafluoride |
| Klorprotixen | Chlorprothixene |
| klorsyrlighet | chlorous acid |
| klortrifluorid | chlorine trifluoride |
| klosett | lavatory |
| kloss | block |
| kloster | abbey |
| kloster- | monastic |
| Klosterbacken | Luostarinmäki |
| klosterkyrka | abbey |
| Klosterkyrkan Saint-Denis | Basilique Saint-Denis |
| klosterliv | monasticism |
| Klosters-Serneus | Klosters |
| Klosterupplösningen | Dissolution of the Monasteries |
| Klosterön Reichenau | Reichenau Island |
| Klostret Admont | Admont Abbey |
| Klostret Maulbronn | Maulbronn Abbey |
| Klostret Seckau | Seckau Abbey |
| klot | ball |
| klotblixt | ball lightning |
| klotformig | globular |
| Klotfoting | Glomeris marginata |
| Klotho | Clotho |
