The 105 most-researched names
- Rahman Arabic and Persian
- Raines English
- Rainey Irish
- Ramey English
- Ramirez Spanish
- Ramos Spanish
- Ramsey Scottish
- Randall English
- Randolph English
- Rangel Spanish
- Rankin Scottish
- Rasmussen Scandinavian
- Ratliff English
- Ray English
- Raymond French
- Redmond Irish
- Reece Welsh
- Reed English
- Reeder English
- Reese Welsh
- Reeves English
- Regan Irish
- Reid Scottish
- Reilly Irish
- Rendon Spanish
- Renteria Spanish
- Reyes Spanish
- Reyna Spanish
- Reynolds English
- Reynoso Spanish
- Rhoades English
- Rhodes English
- Rice English
- Rich English
- Richard English
- Richards German
- Richardson English
- Richey Scottish
- Richmond English
- Richter German
- Ricks English
- Rico Spanish
- Riddle English
- Riggs English
- Riley Irish
- Rios Spanish
- Ritchie Scottish
- Ritter German
- Rivas Spanish
- Rivera Spanish
- Rivers English
- Rizzo Italian
- Roach Irish
- Robbins English
- Roberson
- Roberts English
- Robertson Scottish
- Robinson English
- Robison Scottish
- Robles Spanish
- Rocha Portuguese
- Roche French
- Rock English
- Rodgers
- Rodrigues Portuguese
- Rodriguez Spanish
- Rodriquez Spanish
- Roe English
- Rogers English
- Rojas Spanish
- Roland French
- Rollins English
- Roman Italian
- Romano Italian
- Romero Spanish
- Romo Spanish
- Root English
- Roper English
- Rosa Italian
- Rosado Spanish
- Rosales Spanish
- Rosario Spanish
- Rosas Spanish
- Rose English
- Rosen German
- Rosenberg German
- Ross Scottish
- Rossi Italian
- Roth German
- Rouse English
- Rowe English
- Rowland English
- Roy French
- Rubin Jewish
- Rubio Spanish
- Rucker German
- Rudolph German
- Ruiz Spanish
- Rush English
- Rushing English
- Russell French
- Russo Italian
- Rutherford Scottish
- Rutledge Irish
- Ryan Irish
Every name starting R
The census file has many more. Choose the first two letters.