Editing 1691 (section)

=== July–September ===
* [[July 3]] – [[Marc'Antonio Pasqualini]], Italian opera singer and composer (b. [[1614]])
* [[July 10]] – [[Giacinto Platania]], Italian painter (b. [[1612]])
* [[July 12]]
** [[John Hamilton (Jacobite)|John Hamilton]], Irish military officer of Scottish descent (b. [[1650]])
** [[Marquis de St Ruth]], French (killed at the Battle of Aughrim) (b. [[1650]])
** [[Charles Chalmot de Saint-Ruhe]], French general (b. [[1650]])
* [[July 16]] – [[François-Michel le Tellier, Marquis de Louvois]], Secretary of State for War under Louis XIV (b. [[1641]])
* [[July 18]] – [[Sir John Bowyer, 2nd Baronet]], English politician (b. [[1653]])
* [[July 20]] – [[Jacques Frémin]], French missionary (b. [[1626]])
* [[July 23]] – [[Paul Barillon]], French diplomat (b. [[1630]])
* [[July 26]] – [[Henry Cavendish, 2nd Duke of Newcastle]], English politician (b. [[1630]])
* [[July 30]] – [[Daniel Georg Morhof]], German writer and scholar (b. [[1639]])
* [[August 1]] – [[Marie de Hautefort]], French noble (b. [[1616]])
* [[August 2]] – [[Frederick I, Duke of Saxe-Gotha-Altenburg]] (b. [[1646]])
* [[August 6]]
** [[João Ferreira de Almeida]], pastor (b. [[1628]])
** [[Mary Sackville, Countess of Dorset (1669–1691)|Mary Sackville, Countess of Dorset]], English countess (b. [[1669]])
* [[August 7]]
** [[Livio Mehus]], Flemish painter, draughtsman and engraver (b. [[1630]])
** [[Philip Skippon (1641–1691)|Philip Skippon]], English politician and naturalist (b. [[1641]])
* [[August 8]] – [[François Verwilt]], Dutch Golden Age painter (b. [[1620]])
* [[August 11]] – [[Nicolaes van Verendael]], Flemish painter (b. [[1640]])
* [[August 14]] – [[Richard Talbot, 1st Earl of Tyrconnel]], Irish rebel (b. [[1630]])
* [[August 18]] – [[François d'Alesso d'Éragny]], French soldier, governor general of the French Antilles (b. [[1643]])
* [[August 19]]
** [[Köprülüzade Fazıl Mustafa Pasha]], Ottoman Grand Vizier (b. [[1637]])
** [[Adam Zrinski]], Croatian count and military officer (b. [[1662]])
* [[August 22]] – [[Sir Ralph Delaval, 1st Baronet]], English landowner and politician (b. [[1622]])
* [[August 25]] – [[Philippe Charles d'Arenberg]], Duke of Arenberg (b. [[1663]])
* [[August 27]] – [[Sir Thomas Norton, 1st Baronet]], Member of the Parliament of England (b. [[1615]])
* [[September 6]] – [[William Pulteney (1624–1691)|William Pulteney]], Member of Parliament (b. [[1624]])
* [[September 9]] – [[Kumazawa Banzan]], Japanese philosopher (b. [[1619]])
* [[September 10]] – [[Edward Pococke]], English orientalist and biblical scholar (b. [[1604]])
* [[September 12]] – [[John George III, Elector of Saxony]] from 1680 to 1691 (b. [[1647]])
* [[September 14]] – [[William Hussey (English diplomat)|William Hussey]], English ambassador to the Ottoman Empire (b. [[1642]])
* [[September 15]] – [[Adam Loftus, 1st Viscount Lisburne]], Irish noble (b. [[1647]])
* [[September 18]]
** [[Charles Fane, 3rd Earl of Westmorland]], Member of Parliament and House of Lords (b. [[1635]])
** [[Giovanni Francesco Ginetti]], nephew of Cardinal Marzio Ginetti (b. [[1626]])
* [[September 19]] – [[Sir Henry Piers, 1st Baronet]], Anglo-Irish landowner, soldier, Member of Parliament, Sheriff and antiquarian (b. [[1629]])
* [[September 28]] – [[Johannes Fatio]], Swiss surgeon (b. [[1649]])
* [[September 29]] – [[Johannes Wolfgang von Bodman]], Roman Catholic bishop (b. [[1651]])
* [[September 30]] – [[Catharina Hooft]], wife of Cornelis de Graeff (b. [[1618]])