| Keighley | https://keighley.u3asite.uk/ |
| Kenilworth | https://kenilworth.u3asite.uk/ |
| Kent Network | https://kentnetwork.u3asite.uk/ |
| Kings Lynn | https://kingslynn.u3asite.uk/ |
| Kings Norton & District | https://kingsnorton.u3asite.uk/ |
| Kingsbridge Estuary | https://kingsbridgeestuary.u3asite.uk/ |
| Kingswinford & District | https://kingswinford.u3asite.uk/ |
| Kington | https://westmidlands.u3asite.uk/kington-u3a/ |
| Kinross-shire | https://kinross-shire.u3asite.uk/ |
| Kintyre | https://scotland.u3asite.uk/kintyre-u3a/ |
| Kirkby & District | https://kirkby.u3asite.uk/ |