Ricimer
Rickenbacker, Edward Vernon
rickets
rickettsia
rickettsialpox
Rickey, Branch
Rickmansworth
Rickover, Hyman George
riddle
Ride, Sally K.
Rideau Canal
Ridgefield
Ridgefield Park
Ridgewood
Ridgway, Matthew Bunker
Riding Mountain National Park
Ridley, Nicholas
ridley
Ridpath, John Clark
Riduna
riebeckite
Riefenstahl, Leni
Riego y Nuñez, Rafael del
Riehen
Riel, Louis
Riel’s rebellions
Riemann, Georg Friedrich Bernhard
Riemenschneider, Tilman
Rienzi, Cola di
Riesa
Riesener, Jean Henri
Riesengebirge
Rietveld, Gerrit Thomas
Rif
rifampin
Rif Atlas
rifle
rift valley
Riga
Riga, Gulf of
Riga, Treaty of
Rigaud, André
Rigaud, Hyacinthe
Rigel
rigging
Riggs, Bobby
right
Right, Petition of
right ascension
right-handedness
right of way
right whale
Rigi
Rigil Kent
rigor mortis
Rigsdag
Rig-Veda
Riihimäki
Riis, Jacob August
Rijeka
Rijks Museum
Rijn
Rijswijk
Riksdag
Riley, Bridget
Riley, Charles Valentine
Riley, James Whitcomb
Riley, Fort
Rilke, Rainer Maria
rille
Rimac
Rimbaud, Arthur
rime
Rimini
Rimmer, William
Rimmon
Rimouski
Rimsky-Korsakov, Nicolai Andreyevich
rinderpest
Rinehart, Mary Roberts
Rinehart, William Henry
ring, piece of jewelry
ring, mathematical system
ringbone
ring compound
Ring des Nibelungen, Der
ringhals
Ring nebula
Ringsted
ringtail
ringtail monkey
Ringwood
ringworm
Rinns of Galloway
Río
Riobamba
Rio Branco, José Maria da Silva Paranhos, barão do
Rio Branco
Río Cuarto
Rio de Janeiro, state, Brazil
Rio de Janeiro, city, Brazil
Río de Oro
Rio Grande, city, Brazil
Rio Grande, river, Brazil
Rio Grande, river, United States and Mexico
Rio Grande do Norte
Rio Grande do Sul
Rioja
Riom
Río Muni
Rion
Río Piedras
Riordan, Richard J.
riot, rout, and unlawful assembly
riot-control gas
Río Tinto
Rio Treaty
Riouw Archipelago
riparian rights
Riphath
Ripken, Cal, Jr.
Ripley, George
Ripon, Frederick John Robinson, 1st earl of
Ripon, George Frederick Samuel Robinson, 1st marquess of
Ripon
RISC processor
Rishon Leziyyon
Risorgimento
Risti, Jovan
Ristich, Jovan
Ritchey, George Willis
Ritchie, Alexander Hay
Ritchie, Anne Isabella Thackeray, Lady
Ritschl, Albrecht
Ritson, Joseph
Ritsos, Yannis
Rittenhouse, David
Ritter, Karl
ritual
Ritz, Walter
Riukiu Islands
Riva
Rivadavia, Bernardino
Rivas, Ángel de Saavedra, duque de
Rivas
river
Rivera, Diego
Rivera, Fructuoso
Rivera, José Eustasio
Rivera, Julio Adalberto
Rivera, Primo de
river blindness
River Brethren
Riverdale
River Edge
River Forest
River Grove
Riverina
River Rouge
Rivers, Larry
Rivers, Richard Woodville, 1st Earl
Rivers, William Halse Rivers
Riverside
Riverview
Rives, William Cabell
rivet
Riviera
Riviera Beach
Rivière du Loup
Rivne
Rivoli Veronese
Riyadh
Rizal, José
Rizal
Riza Shah Pahlevi
Rizpah
Rizzio, David
Rjukan
Rn
RNA
Roa, Raúl
roach
road
road runner
Road Town
Roanne
Roanoke, city, United States
Roanoke, river, United States
Roanoke Island
Roanoke Rapids
roaring forties
roasting
Roatán
robalo
Robbe-Grillet, Alain
Robbers, Herman
Robber Synod
robbery
Robbia
Robbins, Frederick Chapman
Robbins, Jerome
Robbins, Lionel Charles
Robert I, French king
Robert II, king of France
Robert I, king of Scotland
Robert II, king of Scotland
Robert III, king of Scotland
Robert I, duke of Normandy
Robert II, duke of Normandy
Robert, Henry Martyn
Robert, Hubert
Robert, Léopold
Robert College
Robert Curthose
Robert Grosseteste
Robert Guiscard
Robert-Houdin, Jean Eugène
Robert Joffrey Ballet
Robert of Brunne
Robert of Courtenay
Robert of Geneva
Robert of Gloucester
Robert of Jumièges
Roberts, Benjamin Titus
Roberts, Sir Charles George Douglas
Roberts, Elizabeth Madox
Roberts, Frederick Sleigh, 1st Earl Roberts of Kandahar
Roberts, Kenneth Lewis
Roberts, Owen Josephus
Robertson, Sir Dennis
Robertson, Ethel Richardson
Robertson, James
Robertson, Oscar
Robertson, Pat
Robertson, Thomas William
Robertson, William
Robertson, Sir William Robert
Robert the Bruce
Robert the Devil
Robert the Strong
Robeson, Paul
Robespierre, Maximilien Marie Isidore
robin
Robin Hood
Robinson, Boardman
Robinson, Charles
Robinson, Edward G.
Robinson, Edwin Arlington
Robinson, Frank
Robinson, Henry Crabb
Robinson, Jackie
Robinson, James Harvey
Robinson, Joan Violet
Robinson, John
Robinson, Sir John Beverley
Robinson, Joseph Taylor
Robinson, Lennox
Robinson, Sugar Ray
Robinson, Theodore
Robinson-Patman Act
robin’s plantain
Roboam
robot
robotics
Rob Roy
Robsart, Amy
Robson, Mount
Robstown
Robusti, Jacopo
Roca, Julio Argentino
Roca, Cabo da
Rocafuerte, Vicente
Rocard, Michel
Rochambeau, Jean Baptiste Donatien de Vimeur, comte de
Rochdale
Rochdale Society of Equitable Pioneers
Rochefort, Victor Henri, marquis de Rochefort-Luçay
Rochefort
Rochelle, La
Rochelle salt
Roches, Peter des
Rochester, John Wilmot, 2d earl of
Rochester
Rochester, University of
Rochester-upon-Medway
Roche-sur-Yon, La
Rochet, Waldeck
rock
rock and roll
Rockaway
Rockburne, Dorothea
rock carvings and paintings
rock crawler
Rock Creek Park
rock crystal
Rockefeller, John Davison
Rockefeller, Nelson Aldrich
Rockefeller, William
Rockefeller Center
Rockefeller Foundation
Rockefeller University
rocket, in botany
rocket, in aeronautics
rocketsonde
Rock Falls
rockfish
rockfoil
Rockford
rock garden
Rockhampton
Rock Hill
Rockies, the
Rockingham, Charles Watson-Wentworth, 2d marquess of
Rock Island, town, Canada
Rock Island, city, United States
Rockland
Rockledge
rock music
Rockne, Knute Kenneth
rock ’n’ roll
rock rabbit
Rock River
rock salt
Rock Springs
rock temple
Rockville
Rockville Centre
Rockwell, Norman
Rocky Hill
Rocky Mount
Rocky Mountain elk
Rocky Mountain goat
Rocky Mountain House
Rocky Mountains
Rocky Mountain sheep
Rocky Mountain spotted fever
Rocky River
rococo, in architecture
rococo, in music
Rocourt
rod
Rodanim
Rodbertus, Karl Johann
Roddenberry, Gene
Rodenbach, Georges
rodent
rodenticide
rodeo
Roderick
Rodez
Rodgers, Bill
Rodgers, Christopher Raymond Perry
Rodgers, John, 1773–1838, American naval officer
Rodgers, John, 1812–82, American naval officer
Rodgers, Richard Charles
Ródhos
Rodilla, Simon
Rodin, Auguste
Rodney, Caesar
Rodney, George Brydges Rodney, 1st Baron
Rodó, José Enrique
Rodope
Rodoreda, Mercè
Rodosto
Rodrigo, Joaquín
Rodríguez, Martín
Rodriguez
Rodríguez Francia, José Gaspar
Rodríguez Larreta, Enrique
Roebling, John Augustus
Roebuck, John
roe deer
Roehm, Ernst
Roelas, Juan de las
Roemer, Olaus
Roentgen, Wilhelm Conrad
Roentgen ray
Roerich, Nicholas Konstantin
Roermond
Roeselare
Roethke, Theodore
Roe v. Wade
Rogaland
Rogation Days
Roger I
Roger II
Roger of Hoveden
Roger of Loria
Roger of Wendover
Rogers, Bruce
Rogers, Carl
Rogers, Henry Huttleston
Rogers, James Gamble
Rogers, James Harvey
Rogers, John, English Protestant martyr
Rogers, John, American sculptor
Rogers, Lindsay
Rogers, Robert
Rogers, Samuel
Rogers, Will
Rogers, William Barton
Rogers, William Pierce
Rogers, Woodes
Rogers
Roger van der Weyden
Roger Williams National Memorial
Roget, Peter Mark
Rogue
Rohan, Henri, duc de
Rohan, Louis René Édouard, prince de
Róheim, Géza
Röhm, Ernst
Rohrer, Heinrich
Rohtak
Rojas, Fernando de
Rojas Pinilla, Gustavo
Rojas Zorrilla, Francisco de
Rokitansky, Karl
Rokossovsky, Konstantin
Roland
Roland de la Platière, Jean Marie
Roland de la Platière, Jeanne Manon Philipon
Roland Holst, Henriëtte (van der Schalk)
Rolfe, Frederick William
Rolfe, John
roll
Rolla
Rolland, Romain
Rolle of Hampole, Richard
roller
roller skating
Rolling Meadows
rolling mill
Rolling Stones
Rollo
Rolph, John
Rølvaag, Ole Edvart
Romagna
Romains, Jules
Romamti-ezer
roman, in printing
Roman, town, Romania
Roman architecture
Roman art
Roman Catholic Church
romance
Romance languages
Roman de la Rose, Le
Roman Empire
Romanesque architecture and art
Romania
Romanian language
Romanian literature
Romanic
Roman law
Roman literature
Romano, Giulio
Romanov
Roman Question
Roman religion
Roman roads
Romans
Romansh
romanticism
Romanus I
Romanus II
Romanus III
Romanus IV
Romany
Romberg, Sigmund
Rome, city, Italy
Rome, cities, United States
Rome, University of
Romeoville
Rømer, Olaus
Romero, Francisco
Romford
Romilly, Sir Samuel
Rommel, Erwin
Romney, George
Romney
Romney Marsh
Rømø
Romsdalen
Romulo, Carlos Peña
Romulus
Romulus Augustulus
Roncesvalles
Ronda
rondo
Rondon, Cândido Mariano da Silva
Rondônia
ronin
Ronne, Finn
Rønne
Ronsard, Pierre de
Röntgen, Wilhelm Conrad
Röntgen ray
rood
Roodepoort
roof
rook
Rooke, Sir George
Rookwood pottery
Roon, Albrecht Theodor Emil, Graf von
Roos, Johann Heinrich
Roosebeke
Roosendaal en Nispen
Roosevelt, Eleanor
Roosevelt, Franklin Delano