Some of the oldest whisky brands in the world include:

1. Bushmills: Established in 1608 in County Antrim, Northern Ireland, Bushmills claims to be the oldest licensed distillery in the world.

2. Old Bushmills Distillery: Also located in County Antrim, Northern Ireland, Old Bushmills Distillery has been producing whiskey since 1784.

3. Glenfarclas: Founded in 1836 in Ballindalloch, Scotland, Glenfarclas is one of the oldest family-owned distilleries in Scotland.

4. Bowmore: Established in 1779 on the Isle of Islay, Scotland, Bowmore is one of the oldest distilleries still in operation on the island.

5. The Macallan: Founded in 1824 in Craigellachie, Scotland, The Macallan is known for producing some of the finest and most sought-after single malt whiskies.

6. Glenlivet: Founded in 1824 in Ballindalloch, Scotland, Glenlivet is one of the first legal distilleries in the Speyside region and a well-known single malt brand.

7. Talisker: Founded in 1830 on the Isle of Skye, Scotland, Talisker is known for its peaty and maritime character.

8. Laphroaig: Established in 1815 on the Isle of Islay, Scotland, Laphroaig is renowned for its distinctive smoky and peaty whiskies.

9. Jameson: Established in 1780 in Dublin, Ireland, Jameson is one of the best-known Irish whiskey brands.

10. Kilbeggan: Dating back to 1757, Kilbeggan is one of the oldest licensed distilleries in Ireland, located in County Westmeath.

It's worth noting that the exact dates of establishment and claims to being the "oldest" may vary, as historical records can be imprecise or subject to interpretation. However, the brands listed above are widely recognized for their long-standing heritage and contribution to the world of whisky.