Pia or Piá may refer to:

Kjersti Alveberg, born 26 July 1948, is a Norwegian choreographer and dancer. Over the last 30 years she has created a considerable amount of highly original ballets for stage and television where she has distinguished herself nationally and internationally and won many prestigious awards for her work.

Kjersti Alveberg began to dance at the age of four, but not until she was 19 she took the decisive step of starting her dance studies at Norwegian National Academy of Ballet in Oslo, working at the same time at Chat Noir as a dancer. Aiming at sociology she went on to study dance in New York, Amsterdam, London and Paris before attending the Nansen Academy. For several years she was a freelance dancer at the Oslo theatres, in fringe groups and in television. For 5 years she was a dancer, actor and singer at Det Norske Teatret doing musicals and plays, also working in TV and in fringe dance companies. Her choreographic debut came in 1975, with "Tomorrow?" at The Norwegian Opera's Ballet Workshop, thanks to Anne Borg,(Director). Her piece caused a lot of attention and enthusiastic acclaim and was soon transmitted in TV to be seen by a bigger audience.