Commonly nicknamed "Nat-chan" (my friend Summer got called that by a few people when she lived in Japan).Other kanji possibilities: "na" -kind of plant -name"tsu" -by the seaNote: some other variations are Natsuki, Natsumi and Natsuyo (I don't think Natsuyo is very common, but the others are a little bit).It's not uncommon to drop the "u" sound when pronouncing Natsuko or Natsuki, but it tends to be pronounced for Natsumi or Natsuyo.
Other kanji possibilities:
"na"
-kind of plant
-name
"tsu"
-by the sea
Note: some other variations are Natsuki, Natsumi and Natsuyo (I don't think Natsuyo is very common, but the others are a little bit).
It's not uncommon to drop the "u" sound when pronouncing Natsuko or Natsuki, but it tends to be pronounced for Natsumi or Natsuyo.