A recent bit of movie trivia posted has inspired a theory that The Jungle Book and The Mummy take place in the same world. Stephen Sommers directed and had a hand in writing both films, which were released in 1994 and 1999, respectively. Having been involved in The Mummy's sequels and many of its Scorpion King spin-offs, Sommers's most recent work as a writer-director is the 2013 adaptation of Dean Koontz's Odd Thomas.
Before the Sommers connection, both movies were based on existing, otherwise unrelated source material; Universal Monsters' classic The Mummy from 1932, and Rudyard Kipling's Mowgli stories from the late 19th century. Both have also received more recent adaptations with Disney's 2016 The Jungle Book and Tom Cruise's poorly-received 2017 The Mummy, the latter of which was meant to initiate its own shared Dark Universe based on the beloved Universal Monsters movies.
A post by Redditor u/Numerous-Lemon on the movie Easter egg haven of r/MovieDetails points out that a location visited in The Mummy called Fort Brydon is named in reference to Colonel Geoffrey Brydon (Sam Neill) from 1994's The Jungle Book. Both Fort Brydon and Colonel Brydon were new inventions for their respective '90s movies and not present in any original stories, so the nod seems very intentional. Beyond authorial intent, which could presumably be traced back to the shared factor of Sommers, the integral connection to the British military that both the character and the location possess is notable.
While no further mention is made in The Mummy that explicitly ties the fort to its Jungle Book namesake in the narrative, some inferences can be made that allow the shared universe theory to work quite nicely. Although the two films take place in different countries, a character like Colonel Brydon specifically would have a particular connection to each, as Britain did have a heavy military presence in both Egypt and India at the time. Furthermore, the two films are set within a couple of decades of one another, with The Jungle Book occurring earlier, allowing time for some great deed by the Colonel in India to be recognized by British forces off in Egypt to name a fort in his honor.
Of course, the name is most likely just a little Easter egg or even just a reference to someone Sommers knows, but it is fun to extrapolate. The theory is, after all, not unlike others based on seemingly inconsequential crossovers, like the large group of sitcoms linked by the fiction Let's Potato Chips, or the Tommy Westphall universe hypothesis which supposes that, based on the finale of '80s medical drama St. Elsewhere, that the narratives of many well-known television shows all take place in one young boy's imagination. Compared to that, a director linking two roughly contemporaneous stories hardly seems out of the question, especially when they fit together as naturally as The Mummy and The Jungle Book do.