New Zealand now has six Olympic medals: three gold and three bronze.
Two golds were won in the rowing on Friday - by the men's pair of Hamish Bond and Eric Murray, and Mahe Drysdale in the men's singles sculls.
And the New Zealand men's track pursuit team won the bronze in their event.
Friday's double evoked memories of the victories of athletes Peter Snell and Murray Halberg in a golden hour in Rome in 1960.
Double scullers Nathan Cohen and Joseph Sullivan won gold on Thursday.
All three New Zealand gold medals have been in rowing and they are currently the top performing nation in that sport ahead of Great Britain and Germany.
New Zealand's other bronze medals were won by rowers Juliette Haigh and Rebecca Scown on Wednesday and the equestrian team on Tuesday.
New Zealand is 12th on the medals table, just behind South Africa. Australia, which so far has only one gold, is 19th.
US tops medals table
The United States has gone to the top of the Olympic medals table after seven days of competition.
The US has 21 golds in its total of 43, while China is second with 20 gold and South Korea third with nine.
Host Great Britain has won eight gold medals.