Leicester Tigers have completed the signings of EW Viljoen and Harno Liebenberg from Super Rugby while forward Jordan Coghlan has moved to Welford Road from Championship side Nottingham.
Versatile back Viljoen will arrive from the Stormers and back-rower Liebenberg from Bulls with Coghlan is taking the step up to the Premiership after three years in the second tier of English rugby.
"EW adds a lot to our outside-back stocks," said Leicester Tigers head coach Geordan Murphy.
"EW is a versatile, skilful and exciting player to have as part of our group.
"Hanro is an aggressive ball-carrier and a physical player around the field, in the best traditions of South African back-row players."
On Coghlan, who has also played for Leinster and Munster, Murphy said: "Jordan is a physical, athletic and experienced player who we are looking forward to welcoming in to the club."