| RISC | RISC (消歧义) | RISC OS |
| RISC OS 5 | RISC-V | Risch算法 |
| RISD | RISE (太陽專輯) | RISE (SPEED專輯) |
| RISE (TAEYANG專輯) | Rise Like a Phoenix | Rise Records |
| Rise Technology | Rise World Tour | Rise, O Voices of Rhodesia |
| Rise世界巡迴演唱會 | Rise唱片 | Rise唱片公司 |
| Rishikesh | Rising | Rising Heart/BEYOND |
| Rising Hope | Rising Sun/總有一天… | Rising Sun/Heart, Mind and Soul |
| RISINGPRO | RISKY | RISKY (專輯) |
| RISKY (专辑) | Risleya | Risleya atropurpurea |
| Rissa tridactyla | Rissooidea | Risuriderecado sinohomocephaltam |
| Rita | Rita Ackermann | Rita Carpio |
| Rita chrysea | Rita gogra | Rita Grosse-Ruyken |
| Rita kuturnee | Rita Lai | Rita macracanthus |
| Rita Ora | Rita rita | Rita sacerdotum |
| Rita Streich | Ritalin | Ritápolis |
| Rite Aid | Ritek | Rites of Spring |
| Rits | Ritsu Doan | Ritter Sport |
| Ritter反应 | Ritual Entertainment | Rituparna Das |
| Rituxan | Rituximab | Ritz-Carlton Atlantic City |
| Riva | RIVA 128 | RIVA TNT |
| RIVA TNT2 | Rivaldo | Rivaldo Vítor Borba Ferreira |
| Rivals.com | Rivanol | RIVER |
| RIVER (AKB48單曲) | RIVER (JKT48單曲) | River Falls, Alabama |
| River Forth | River's 543 | Rivera |
| Riverbank, California | Riverdale, North Dakota | Riverhillsoft |
| Riverina | Rivers Cuomo | Rivers of Blood speech |
| Riverside Stadium | Riverside, Alabama | Riverside, Wyoming |
| Riversleigh | Riversul | Riverton, Wyoming |
| Riverview, Alabama | Riviera Beach, Florida | Rivina |
| Rivina humilis | Rivne | Rivula curvifera |
| Rivulidae | Rivulus cylindraceus | Rivulus deltaphilus |
| Rivulus formosensis | Rivulus insulaepinorum | Rivulus janeiroensis |
| Rivulus karaja | Rivulus lanceolatus | Rivulus lazzarotoi |
| Rivulus limoncochae | Rivulus luelingi | Rivulus monticola |
| Rivulus nudiventris | Rivulus ornatus | Rivulus paracatuensis |
| Rivulus planaltinus | Rivulus punctatus | Rivulus rectocaudatus |
| Rivulus roloffi | Rivulus rubrolineatus | Rivulus simplicis |
| Rivulus speciosus | Rivulus staecki | Rivulus tenuis |
| Riya | Riyad al-Asad | Riyad Farid Hijab |
| Riyanto Subagja | RIZE | Rizwan Ahmed |
| Rizwan Azam | RJ-45 | RJ45 |
| RJAA | RJAH | RJ·米特 |
| RJ·賽勒 | RJC年度風雲車 | RJC年度风云车 |
| RJNT | RJOO | RJTT |
| Rk 62 | Rk 62突擊步槍 | RK 95 TP |
| Rk 95 TP | Rk 95 TP突擊步槍 | Rk-92 野蠻人 |
| Rk-92 野蛮人 | Rk-92 Savage | RKA |
| RKB | RKB毎日放送 | RKB每日放送 |
| RKC瓦尔韦克 | RKC華域克 | RKI FINANCE (2010) LIMITED |
| RKI FINANCE (2011) LIMITED | RKWard | RK札格瑞布 |
| RL | RL (複雜度) | RL10火箭发动机 |
| RLC | RLC电路 | RLC電路 |
| RL电路 | RLE | RLM |
| RLV-TD | RM | Rm (Unix) |
| RM-161標準三型飛彈 | RMB | RMB-93 |
| RMB-93霰彈槍 | RMB-93泵動式霰彈槍 | RMB-93泵動式散彈槍 |
| RMB-93散彈槍 | RMBS | Rmdir |
| RMHK | RMHKEP | RMIT |
| RMK | RMK30 | RMNZ |
| RMQ | RMS | Rms |
| RMVB | Rmvb | RMX |
| Rn | RNA | RNA 干涉 |
| RNA 干扰 | RNA 結構 | RNA thermometer |
| RNA thermosensor | RNA virus | RNA-dependent RNA polymerase |
| RNA-Seq | RNAa | RNA基因 |
| RNA合成 | RNA复制 | RNA密码子表 |
| RNA世界 | RNA世界假說 | RNA世界学说 |
| RNA世界學說 | RNA干涉 | RNA干擾 |
| RNA干擾現象 | RNA干扰 | RNA引擎 |
| RNA依賴性RNA聚合酶 | RNA列表 | RNA剪接 |
| RNA编辑 | RNA病毒 | RNA螺旋酶 |
| RNA聚合酶 | RNA聚合酶Ⅱ | RNA聚合酶連鎖反應 |
| RNA聚合酶II | RNA聚合酶V | RNA複製酶 |
| RNA誘導沉默複合體 | RNA诱导沉默复合体 | RNA转录 |
| RNA酶 | RNA酶P | RNA逆轉錄病毒 |
| RNAi | RNAse | RNase |
| RNase P | RNA提取 | RNA溫度傳感器 |
| RNA溫度計 | RNA激活 | RNA测序 |
| RnB | RNC | RN黑洞 |
| RNG | RNLI | RNN |
| RNP | RO | RO2 |
| Roa excelsa | Roa jayakari | Road Between |
| Road Dogg | Road Fighter (專輯) | ROAD KING INFRASTRUCTURE FINANCE (2007) LIMITED |
| Road No. 1 | Road of Resistance | Road To Ithaca |
| Road to Perdition | Road to Revolution: Live at Milton Keynes | Roadkill |
| RoadShow | Roadshow | RoadShow 至尊歌曲 |
| RoadShow至尊音乐颁奖礼 | RoadShow至尊音樂頒獎禮 | RoadShow至尊音樂頒獎禮2005 |
| RoadShow至尊歌曲 | Roald Dahl | Roald Hoffmann |
| Roanoke, Alabama | Roar | Roaring 20s |
| Roaring Twenties | Roßbach | Roßleithen |
| Rob Cohen | Rob Corddry | Rob Epstein |
| Rob Estes | Rob Halford | Rob Kirby |
| Rob Lowe | Rob Marshall | Rob Mayes |
| Rob Minkoff | Rob Morrow | Rob Pardo |
| Rob Refsnyder | Rob Riggle | Rob Schneider |
| Rob Van Dam | Rob Zombie | Robben |
| Robbert van Eijndhoven | Robbie Cordemans | Robbie Keane |
| Robbie Williams | Robbing the Cradle | Robby Ginepri |
| Robeline, Louisiana | Robert | Robert A. Heinlein |
