Irene van Dyk MNZM (née Viljoen; born 21 June 1972) is a South African-born New Zealand netball player.

Van Dyk played for the Central Pulse in the ANZ Championship from 2014, taking a coaching role in more recent years.

She was part of the silver medal-winning South African team who beat New Zealand 59–57 in the first round of the 1995 Netball World Championships and lost 68–48 to Australia in the final.

Van Dyk won a silver medal as part of the New Zealand team that lost the final 57–55 against Australia at the 2002 Commonwealth Games in Manchester, England after double overtime.

[8] The Silver Ferns won the Netball World Championships in Kingston, Jamaica, beating Australia 49–47 in the final.

The Silver Ferns had not won a major event since the 1987 World Netball Championships in Glasgow, Scotland.

Van Dyk was a dominant factor in the win and cemented her position as the world's greatest goal shooter especially against Australia's own formidable shooting weapon Catherine Cox whose own form fell away after being worn down by New Zealand's goal keeper Vilimaina Davu.

Partnered with goal attack Jodi Te Huna, van Dyk's composure and athleticism came to the fore and Australia appeared to have no response to this and the overall effort of New Zealand.

In 2010, van Dyk was chosen to lead the New Zealand team in the Opening Ceremony of the 2010 Commonwealth Games in Delhi.

Van Dyk transferred to the Central Pulse following the resignation of coach Noeline Taurua from her previous team, Waikato/Bay of Plenty Magic.