| Riot squad gadget | 17 |
| Riot squad defenses | 19 |
| Riot squad concerns | 19 |
| Riot squad canister | 19 |
| Riot spray | 10 |
| Riot site in California: 1965 | 29 |
| Riot robber | 11 |
| Riot remedy | 11 |
| Riot queller | 12 |
| Riot police goal | 16 |
| Riot participant, maybe | 23 |
| Riot participant | 16 |
| Riot or Homestead | 17 |
| Riot of a kind | 14 |
| Riot item | 9 |
| Riot impetus | 12 |
| Riot grrrls, say | 16 |
| Riot grrrl legend Kathleen | 26 |
| Riot gear | 9 |
| Riot figures | 12 |
| Riot ender (or inciter) | 23 |
| Riot cop's weapon | 21 |
| Riot cop's gear | 19 |
| Riot control weapon | 19 |
| Riot control agent | 18 |
| Riot conclusion | 15 |
| Riot by passengers trying to catch the last flight? | 51 |
| Riot anagram | 12 |
| Riot act readers | 16 |
| Riot | 4 |
| Rios or barrios | 15 |
| Rios and Rondos | 15 |
| Riordan's successor as Los Angeles mayor | 44 |
| Rioja, e.g. | 11 |
| Rio's mountain | 18 |
| Rio's make | 14 |
| Rio's land | 14 |
| Rio's follower? | 19 |
| Rio's carnival, e.g. | 24 |
| Rio's car maker | 19 |
| Rio's beach | 15 |
| Rio ____ | 8 |
| Rio ___, Spanish Sahara | 23 |
| Rio ___, S.A. stream | 20 |
| Rio ___, part of the Venezuela/ Colombia boundary | 49 |
| Rio ___, multinational coal-mining giant | 40 |
| Rio ___, in Spanish Sahara | 26 |
| Rio ___, El Paso's river | 28 |
| Rio ___, city in Brazil | 23 |
| Rio ___, Brazil | 15 |
| Rio ___, Amazon feeder | 22 |
| Rio ___ Plata, S.A. estuary | 27 |
| Rio ___ Plata | 13 |
| Rio ___ (border river) | 22 |
| Rio ___ (Amazon feeder) | 23 |
| Rio ___ | 7 |
| Rio __ | 6 |
| Rio vis-Ã -vis the 2016 Olympics | 34 |
| Rio Treaty seq. | 15 |
| Rio Treaty implementer: Abbr. | 29 |
| Rio Treaty implementer, briefly | 31 |
| Rio seven | 9 |
| Rio Rita: Abbr. | 15 |
| Rio rhythms | 11 |
| Rio rhythm | 10 |
| Rio residences | 14 |
| Rio relative | 12 |
| Rio producer | 12 |
| Rio parade music | 16 |
| Rio or Rondo | 12 |
| Rio or Casa | 11 |
| Rio nitery, for short | 21 |
| Rio neighborhood whose name means "stinky lake" in Tupi | 65 |
| Rio neighborhood of song | 24 |
| Rio neighborhood | 16 |
| Rio native | 10 |
| Rio Muni seaport | 16 |
| Rio matron | 10 |
| Rio maker | 9 |
| Rio make | 8 |
| Rio Lobo actor | 17 |
| Rio lass | 8 |
| Rio lady | 8 |
| Rio kook? | 9 |
| Rio jokester? | 13 |
| Rio is there | 12 |
| Rio hello | 9 |
| Rio greeting | 12 |
| Rio Grande tributary | 20 |
| Rio Grande sch. | 15 |
| Rio Grande port | 15 |
| Rio Grande formation | 20 |
| Rio Grande feeder | 17 |
| Rio Grande do ___, Brazil | 25 |
| Rio Grande do ___ (Natal's state) | 37 |
| Rio Grande do -- (Brazilian state) | 34 |
| Rio Grande city | 15 |
| Rio girl | 8 |
| Rio fill | 8 |
| Rio district | 12 |