| Wakefield | Town Profile | 1812 | Middlesex | Reading [South Reading to 1868] | | Massachusetts: Vital Records, 1620-1850Middlesex County, MA: Probate File Papers, 1648-1871 |
| Wales | Town Profile | 1762 | Hampden | Brimfield [South Brimfield to 1828] | | |
| Walpole | Town Profile | 1724 | Middlesex | Dedham | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Waltham | Town Profile | 1738 | Middlesex | Watertown | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Abstracts of Court Records, 1643-1674 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Wannamoisett | Swansea | | | | Swansea | |
| Ward | Auburn | | | | Auburn | |
| Ware | Town Profile | 1761 | Hampshire | | | |
| Ware River Parish | Ware | | | | Ware | |
| Wareham | Town Profile | 1739 | Plymouth | Agawam Plantation & Rochester | | Massachusetts: Vital Records, 1620-1850 Plymouth County, MA: Probate File Papers, 1686-1881 |
| Warren | Town Profile | 1742 | Worcester | Brimfield, Brookfield, & Kingsfield [Western to 1834] | | Massachusetts: Vital Records, 1620-1850 Worcester County, MA: Probate File Papers, 1731-1881 |
| Warwick | Town Profile | 1763 | Franklin | | | |
| Washington | Town Profile | 1777 | Berkshire | | | Massachusetts: Vital Records, 1620-1850 |
| Watertown | Town Profile | 1630 | Middlesex | | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Wayland | Town Profile | 1780 | Middlesex | Sudbury [East Sudbury to 1835] | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Webster | Town Profile | 1832 | Worcester | Dudley & Oxford | | Worcester County, MA: Probate File Papers, 1731-1881 |
| Wellesley | Town Profile | 1881 | Norfolk | Needham | | |
| Wellfleet | Town Profile | 1763 | Barnstable | Eastham | | Massachusetts: Vital Records, 1620-1850 |
| Wendell | Town Profile | 1781 | Franklin | Ervingshire & Shutesbury | | |
| Wenham | Town Profile | 1643 | Essex | | | Massachusetts: Vital Records, 1620-1850 Essex County, MA: Probate File Papers, 1638-1881 |
| Western | Warren | | | | Warren | |
| Wessacucus | Newbury | | | Newbury | | |
| West Boylston | Town Profile | 1808 | Worcester | Boylston, Holden & Sterling | | Massachusetts: Vital Records, 1620-1850 Worcester County, MA: Probate File Papers, 1731-1881 |
| West Bridgewater | Town Profile | 1822 | Plymouth | Bridgewater | | Massachusetts: Vital Records, 1620-1850 Plymouth County, MA: Probate File Papers, 1686-1881 |
| West Brookfield | Town Profile | 1848 | Worcester | Brookfield | | Worcester County, MA: Probate File Papers, 1731-1881 |
| West Cambridge | Arlington | | | | Arlington | |
| West Hoosuck Plantation | Williamstown | | | | Williamstown | |
| West Newbury | Town Profile | 1819 | Essex | Newbury | | Massachusetts: Vital Records, 1620-1850 Essex County, MA: Probate File Papers, 1638-1881 |
| West Roxbury | Town Profile | 1851 | Suffolk | Roxbury | annexed to Boston, 1874 | |
| West Springfield | Town Profile | 1774 | Hampden | Springfield | | Massachusetts: Vital Records, 1620-1850 |
| West Stockbridge | Town Profile | 1774 | Berkshire | Stockbridge | | Massachusetts: Vital Records, 1620-1850 |
| West Tisbury | Town Profile | 1892 | Dukes | Tisbury | | |
| Westborough | Town Profile | 1717 | Worcester | Marlborough | | Massachusetts: Vital Records, 1620-1850 Worcester County, MA: Probate File Papers, 1731-1881 |
| Westfield | Town Profile | 1669 | Hampden | Springfield | | Westfield, MA: Baptisms Performed in the Church of Christ, 1679-1836 Westfield, MA: Marriage Records of the First Church, 1781-1835 Westfield, MA: Deaths in the First Church, 1728-1836 Massachusetts: Vital Records, 1620-1850 |
| Westford | Town Profile | 1729 | Middlesex | Chelmsford | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Westhampton | Town Profile | 1778 | Hampshire | Northampton | | |
| Westminster | Town Profile | 1759 | Worcester | | | Massachusetts: Vital Records, 1620-1850 Worcester County, MA: Probate File Papers, 1731-1881 |
| Weston | Town Profile | 1713 | Middlesex | Watertown | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Westport | Town Profile | 1787 | Dartmouth | | | Massachusetts: Vital Records, 1620-1850 |
| Westwood | Town Profile | 1897 | Norfolk | Dedham | | |
| Weymouth | Town Profile | 1635 | Norfolk | | | Massachusetts: Vital Records, 1620-1850 |
| Weymouth Canada | Ashfield | | | | Ashfield | |
| Whately | Town Profile | 1771 | Franklin | Hatfield | | |
| Whitman | Town Profile | 1875 | Plymouth | Abington & East Bridgewater [South Abington to 1886] | | Plymouth County, MA: Probate File Papers, 1686-1881 |
| Wilbraham | Town Profile | 1763 | Hampden | Springfield | | Massachusetts: Vital Records, 1620-1850 |
| Williamsburg | Town Profile | 1771 | Hampshire | Hatfield | | |
| Williamstown | Town Profile | 1765 | Berkshire | | | Massachusetts: Vital Records, 1620-1850 |
| Wilmington | Town Profile | 1730 | Middlesex | Reading | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Winchendon | Town Profile | 1764 | Worcester | | | Massachusetts: Vital Records, 1620-1850 Worcester County, MA: Probate File Papers, 1731-1881 |
| Winchester | Town Profile | 1850 | Middlesex | Medford, Woburn, & West Cambridge | | Middlesex County, MA: Probate File Papers, 1648-1871 |
| Windsor | Town Profile | 1771 | Berkshire | | | Massachusetts: Vital Records, 1620-1850 |
| Winthrop | Town Profile | 1852 | Suffolk | Chelsea & Woburn [North Chelsea to 1852] | | |
| Woburn | Town Profile | 1642 | Middlesex | | | Massachusetts: Vital Records, 1620-1850 Middlesex County, MA: Abstracts of Court Records, 1643-1674 Middlesex County, MA: Probate File Papers, 1648-1871 |
| Wollonopaug | Wrentham | | | | Wrentham | |
| Worcester | Town Profile | 1684 | Worcester | | | Massachusetts: Vital Records, 1620-1850 Worcester County, MA: Probate File Papers, 1731-1881 Worcester, MA: Records of the First Unitarian Church, 1785-1919 |
| Worthington | Town Profile | 1768 | Hampshire | | | Massachusetts: Vital Records, 1620-1850 |
| Wrentham | Town Profile | 1673 | Norfolk | | | Massachusetts: Vital Records, 1620-1850 |