| red sky at night, shepherd's delight | Abendrot, Schönwetterbot |
| red sky in the morning, sailors take warning | Morgenrot, Schlechtwetterbot |
| red sky in the morning, shepherd's warning | Morgenrot, Schlechtwetterbot |
| Red Slate Mountain | Red Slate Mountain |
| Red Slender Loris | Schlankloris |
| red sludge | Rotschlamm |
| Red Slug | Große Wegschnecke |
| red snapper | Roter Schnapper |
| red snow | Blutschnee |
| Red Sonja | Red Sonja |
| Red Sorghum | Das Rote Kornfeld |
| red sorrel | Kleiner Sauerampfer |
| Red Spider Nebula | Red-Spider-Nebel |
| red spine star | Lincks Walzen-Seestern |
| Red spot | Rosa |
| red sprite | roter Kobold |
| red spurfowl | Rotes Spornhuhn |
| Red Square | Roter Platz |
| red squirrel | Eichhörnchen |
| Red star | Roter Stern |
| Red Star Belgrade | FK Roter Stern Belgrad |
| Red Star Rising | Drachenauge |
| Red Star Saint-Ouen | Red Star Paris |
| red starfish | Blutstern |
| Red states and blue states | Rote Staaten und blaue Staaten |
| Red Storm Rising | Im Sturm |
| red strawberry tongue | Himbeerzunge |
| red stripe angel | Schmuck-Zwergkaiserfisch |
| red suit | roter Anzug |
| Red Sun | Rivalen unter roter Sonne |
| Red Sunday | Roter Sonntag |
| Red Sundown | Auf der Spur des Todes |
| red sunset | Abendröte |
| red super giant , RSG | Roter Überriese |
| Red supergiant | Roter Überriese |
| red table wine | roter Tafelwein |
| red tape | Amtsschimmel |
| Red telephone | Heißer Draht |
| Red Terror | Roter Terror |
| red tetra | Roter von Rio |
| red thorny starfish | Dornen-Seestern |
| red thrombus | roter Thrombus |
| red thrush | Rotrücken-Spottdrossel |
| red tide | Rotschlamm |
| red tile starfish | Halsketten-Seestern |
| Red Timber | Rotes Holz |
| red toenails | rote Fussnägel |
| Red Tomahawk | Der blutige Westen |
| red top | Schmierblatt |
| red top reporter | Sensationsreporter |
| red top reporters | Sensationsreporter |
| red tops | Schmierblätter |
| red trefoil | Purpur-Klee |
| red trillium | Aufrechte Waldlilie |
| red trousers | rote Hose |
| Red Turban Rebellion | Rote Turbane |
| red turtle dove | Weinrote Halsringtaube |
| red underwing | Rotes Ordensband |
| red underwing moth | Rotes Ordensband |
| red velvet | roter Samt |
| Red Vienna | Rotes Wien |
| red vine spinach | Indischer Spinat |
| red vineyard peach | Roter Weinbergpfirsich |
| red violet | rotviolett |
| red vision | Rotsichtigkeit |
| Red Volta | Roter Volta |
| red warbler | Purpurwaldsänger |
| red wasp | Rote Wespe |
