| NZBTU | |
| Location Country: | New Zealand |
| Affiliation: | NZCTU |
| Members: | 1400 |
| Full Name: | New Zealand Building Trades Union |
| Founded: | 1860 |
| Headquarters: | Christchurch, New Zealand |
| Key People: | David O'Connell, national secretary |
| Website: | www.nzbtu.org.nz |
The New Zealand Building Trades Union (NZBTU) was a national trade union in New Zealand. It traced its roots back to a carpenters and joiners union in 1860.
The NZBTU had 1400 members and was a member of the New Zealand Council of Trade Unions.