Rabbi Meir can be assumed to be the author of an Unattributed Mishnah: Gittin 4a
Rabbi Meir and his wife Beruriah, and antagonistic Biryonim: Berachot 10a
Rabbi Meir analyzed the Name of Kidor the Innkeeper: Yoma 83b
Rabbi Meir isn't always the Mishnaic Sage labelled "Achairim": Tos. Berachot 9b #2
Rabbi Meir used to say that Learning Torah and Awe of Hashem are the main elements for which a person should strive: Berachot 17a
Wouldn't allow people to make a medical plaster for him on Shabbat, although he permitted it for others: Shabbat 134a
Rabbi Meir said that he never acted against the rulings of his peers: Shabbat 134a
Rebbe said, "I am sharper than my peers only because I learned in the row behind Rabbi Meir. Had I been in front of Rabbi Meir, I would have been still sharper": Eruvin 13b
Rabbi Meir writing a Scroll of the Purim Story from memory, when no other was available: Megillah 18b
Rabbi Elazar ben Azariah terming him "Meir": Gittin 12b
His Brother-in-law was Yehoshua Ben Ziruz: Shabbat 147a
Set of Rabbi Meir's statements: Menachot 43b
When an anonymous student cites Rabbi Yishmael in front of Rabbi Akiva, that is Rabbi Meir: Eruvin 13a
Rabbi Meir tried to learn before Rabbi Akiva, but Rabbi Akiva was too sharp, and so he learned before Rabbi Yishmael, and then before Rabbi Akiva: Eruvin 13a
Rabbi Yishmael warning Rabbi Meir about the seriousness of writing a Torah scroll, and Rabbi Meir's response: Eruvin 13a
Rabbi Acha bar Chanina said, "It is revealed and known before the Creator of the Universe that there was no one in Rabbi Meir's generation who was Rabbi Meir's peer. The law doesn't follow him, only because his peers could not follow his logic": Eruvin 13b
Rabbi Yochanan said, "Rabbi Oshia was to his generation as Rabbi Meir was to his; his colleagues couldn't fully understand his opinions": Eruvin 53a
Sumchus was a student of Rabbi Meir, and for every case in which the answer was "Pure" he could provide 48 reasons for that decision, and for every case in which the answer was "Impure" he could provide 48 reasons for that decision: Eruvin 13b
Rabbi Shimon ben Elazar reporting a practice of Rabbi Meir: Eruvin 29a
Rebbe changing his practice when he found out that Rabbi Meir ruled the practice was forbidden: Shabbat 147a
The law always follows Rabbi Meir when he rules strictly: Ketuvot 57a, 60b