| ClickHouse | ClickOnce | Clidastes |
| Client | Client (альбом) | Client (значения) |
| Client Access License | Client honeypot | Client-server |
| Cliff 'Em All | Cliff ’Em All | Cliff Barker |
| Cliff Bastin | Cliff Bleszinski | Cliff Hagan |
| Cliff Levingston | Cliff Martinez | Cliff Richard |
| Cliff Simon | Cliff Williams | Cliffhanger (видеоигра) |
| Cliffhanger (игра) | Clifford Carwood Lipton | Clifford Chance |
| Clifford Donald Simak | Clifford Edmund Bosworth | Clifford Eugene Barker |
| Clifford Ray | Clifford Rozier | Clifford Shull |
| Clifford Stein | Clifford Tobin DeYoung | Clifford Warren Ashley |
| Cliffs of Gallipoli | Cliffs Of Gallipoli | Clifton McNeely |
| Cliftonia | Cliftonia monophylla | Climaciella |
| Climaciella brunnea | Climacoceratidae | Climacodon |
| Climacoptera brachiata | Climacs | Climacteridae |
| Climate Prediction | ClimatePrediction.net | Climateprediction.net |
| Climatiiformes | Climatius | Climax |
| Climax Blues Band | Climax Chicago Blues Band | Climax Group |
| Climbing | Climbing to New Lows | Climie Fisher |
| Clin Rev Allergy Immunol | Clinandrium | Clinch County, Georgia |
| Clinelymus sibiricus | Clinelymus yubaridakensis | Clinic |
| Clinical Reviews in Allergy & Immunology | Clinidium | Clinique |
| Clinocampsicnemus | Clinopodium | Clinopodium acinos |
| Clinopodium calamintha | Clinopodium grandiflorum | Clinopodium vulgare |
| Clinostylis speciosa | Clinotarsus | Clinotarsus curtipes |
| Clint Dempsey | Clint Eastwood | Clint Eastwood (значения) |
| Clint Eastwood (песня) | Clint Mansell | Clint Mathis |
| Clint Wager | Clinton County, Illinois | Clinton County, Indiana |
| Clinton County, Iowa | Clinton County, Kentucky | Clinton County, Michigan |
| Clinton County, Missouri | Clinton County, New York | Clinton County, Ohio |
| Clinton County, Pennsylvania | Clinton Doctrine | Clinton Hart Merriam |
| Clinton Hubert Morrison | Clinton J. Clint Hill | Clinton Morrison |
| Clinton–Washington Avenues (IND Crosstown Line) | Clinton–Washington Avenues (IND Fulton Street Line) | Clintonia |
| CLion | Cliona | Cliona amphitritae |
| Cliona patera | Clione limacina | CLIP |
| Clipboard | Clipmap | Clipmapping |
| Clipper | Clipper Adventurer | CLIPS |
| CLIPSAS | CLIR | CLISP |
| CLIST | Clistogastra | Clithon |
| Clitocybe | Clitocybe aberrans | Clitocybe alboumbilicata |
| Clitocybe aurantiaca | Clitocybe candicans | Clitocybe cerussata |
| Clitocybe cinerescens | Clitocybe clavipes | Clitocybe connata |
| Clitocybe cyathiformis | Clitocybe dealbata | Clitocybe diatreta |
| Clitocybe gallinacea | Clitocybe geotropa | Clitocybe gibba |
| Clitocybe gossypina | Clitocybe haasiana | Clitocybe infundibuliformis |
| Clitocybe langei | Clitocybe metachroa | Clitocybe nebularis |
| Clitocybe odora | Clitocybe olearia | Clitocybe phosphorea |
| Clitocybe phyllophila | Clitocybe pithyophila | Clitocybe pruinosa |
| Clitocybe rivulosa | Clitocybe tabescens | Clitocybe tenuissima |
| Clitocybe vibecina | Clitocybe viridis | Clitocybula |
| Clitomachus | Clitopilus prunulus | Clitoria |
| Clitoria albiflora | Clitoria bracteata | Clitoria cajanifolia |
| Clitoria coelestris | Clitoria kajanifolia | Clitoria mariana |
| Clitoria parviflora | Clitoria philippensis | Clitoria pilosula |
| Clitoria ternatea | Clitoria ternatensium | Clitoris |
| Clitostethus | Clitostethus arcuatus | Clive Allen |
| Clive Barker | Clive Barker's Jericho | Clive Barker's Undying |
| Clive Barker’s Jericho | Clive Barker’s Undying | Clive Bunker |
| Clive Gerard Liddell | Clive Marles Sinclair | Clive Owen |
| Clive Staples Lewis | Clivia | Clivia miniata |
| Clivina | Clivina fossor | CLIX |
| CLMUL instruction set | CLN | CLN (значения) |
| CLN (киберспортивная лига) | CLN (Движение Сопротивления) | CLNP |
| Cloaca Maxima | Cloaca maxima | Cloak and Dagger |
| CloakNT | Clock DVA | Clock gating |
| Clock Tower | Clock Tower (серия игр) | Clock Tower (PlayStation) |
| Clock Tower (игра, 1995) | Clock Tower 3 | Clock Tower II: The Struggle Within |
| Clock Tower: The First Fear | Clocks | Clocks (песня Coldplay) |
| Clockstoppers | Clockwork Angels | Clockwork Orange |
| Clockwork orange | Clockwork Planet | Clockwork Times (CWT) |
| Clocky | Cloe and Holly Mackie | Cloeon dipterum |
| Clojure | ClojureScript | Clokey |
| Clone Wars | Clone wars | CloneCD |
| CloneDVD | Clonezilla | Clonk |
| Clonophis | Clonophis kirtlandii | Cloob |
| Clooney | Cloop | Cloquet |
| Clorinda Fiorentino | CLOS | Clos |
| Close as You Get | Close As You Get | Close Combat |
| Close Encounters of the Third Kind | Close Enough for Rock 'N' Roll | Close Enough for Rock 'n' Roll |
| Close Enough for Rock ’n’ Roll | Close to a World Below | Close to Metal |
| Close to Seven | Close To Seven | Close to the Edge |
| Close Up | Closed Arrow | Closed Casket |
| Closed source | Closed-circuit television | ClosedBSD |
| Closer | Closer (Fool's Garden song) | Closer (альбом Joy Division) |
| Closer (песня Fool’s Garden) | Closer (песня Nine Inch Nails) | Closer (песня The Chainsmokers) |
| Closer to God | Closer To God | Closer to Heaven |
| Closer to the Edge | Closer to the Truth | Closing Time |
| Clossiana | Clossiana dia | Clossiana frigga |
| Clossiana matveevi | Clossiana selene | Clossiana titania |
| Clossiana tritonia matveevi | Closterkeller | Clostridia |
| Clostridium | Clostridium acetobutylicum | Clostridium botulinum |
| Clostridium difficile | Clostridium histolyticum | Clostridium perfringens |
| Clostridium putrificum | Clostridium septicum | Clostridium sordellii |
| Clostridium tetani | Closure | Closure (игра) |
| Clothier | Clothodidae | Cloud |
| Cloud (игра) | Cloud Appreciation Society | Cloud Commander |
| Cloud computing | Cloud County, Kansas | Cloud Cult |
| Cloud cult | Cloud Gate | Cloud Maze |
| Cloud Native Computing Foundation | Cloud Nine | Cloud Nine (альбом Джорджа Харрисона) |
| Cloud Nine (альбом) | Cloud Nothings | Cloud Strife |
