John Guillim
![Arms of Guillim of Minsterworth: Argent, a lion rampant ermines collared or[1]](/uploads/202501/16/Armorial_Bearings_of_the_GWILLIM_family_of_Wellington,_of_Trippenkennet,_and_of_Whitchurch,_Herefs1129.png)


John Guillim (c. 1565 – 7 May 1621) of Minsterworth, Gloucestershire, was an antiquarian and officer of arms at the College of Arms in London. He is best remembered for his monumental work on heraldry, A Display of Heraldry, first published in London in 1610.