Pi T-Shirts

The number pi, or π, is a mathematical constant used to calculate measurements in circles. The number represents the ratio of the circumference to the diameter. The name PI has has been used in puns and math geek jokes for years, and these sayings make fun novelty t-shirt designs. Find silly pi-themed t-shirts here for celebrating PI day or for spreading math geek joy any time of the year.

I Love Pi Day Funny Math Spoof 3.14 March 14th Holiday T-Shirt

Celebrate PI Day on March 14 or any day with this fun I Love Pi Day t-shirt! You can celebrate the ultimate math lover holiday with this cute design that has a heart made of PI symbols! The full sentiment is "I Love PI Day" or "I Heart...

Funny Pi Password Star Wars Mashup Shirt for Password Day

The first Thursday in May, today, May 4, 2023, is designated as World Password Day, a day meant to promote password best practices for a safer online experience. Using a secure password management program is a great way to get your passwords under control, keep them safe, and...

Love Is Like PI Funny Math Geek T-Shirt

This is a fun graphic t-shirt that mashes up a sentiment of love with the mathematical constant PI. The design includes symbolic elements along with artfully arranged text. The main element of this t-shirt design is the text, which is arranged around a heart that surrounds the symbol...

Funny Pineapple Pi Symbol Pun Math Teacher Pi Day Sweatshirt – Funny Pineapple Pi Symbol Pun Math Teacher Pi Day View on Zazzle
Funny Promoted to Daddy Est. 2025 Gender Reveal Pi Hoodie – Funny Promoted to Daddy Est. 2025 Gender Reveal Pink Or Blue View on Zazzle
Funny Pineapple Pi Symbol Pun Math Teacher Pi Day Sweatshirt – Funny Pineapple Pi Symbol Pun Math Teacher Pi Day View on Zazzle
Pi 3 14 = Pie Coincidence ? I Think Not Math Pun T-Shirt – If you love mathematics this sarcastic funny geek 3,14 tee is the one for you! Perfect for a birthday Pi day March 14 or Christmas present... View on Amazon
Funny Promoted to Daddy Est. 2025 Gender Reveal Pi T-Shirt – Funny Promoted to Daddy Est. 2025 Gender Reveal Pink Or Blue View on Zazzle
Pi with 10000 Digits - Maths - Pi Day T-Shirt – Do you love mathematics? The funny saying and clothing for men, women, dad, mother and friends for birthdays, Christmas and Pi Day.; Are you looking for... View on Amazon
Funny Pi Day Spiral Math Teacher Happy Pi Day Coqu T-Shirt – Funny Pi Day Spiral Math Teacher Happy Pi Day Coquette Bow View on Zazzle
Pi Spiral Novelty Pi Day Tee T-Shirt – Lightweight, Classic fit, Double-needle sleeve and bottom hem. View on Amazon
Funny Pineapple Pi Symbol Pun Math Teacher Pi Day T-Shirt – Funny Pineapple Pi Symbol Pun Math Teacher Pi Day View on Zazzle
Funny Pi Day Spiral Math Teacher Happy Pi Day Coqu Hoodie – Funny Pi Day Spiral Math Teacher Happy Pi Day Coquette Bow View on Zazzle
Funny Chicken Pot Pi Shirt Day Pie Math Lover Geek Gift 3.14 T-Shirt – Grab this funny Chicken Pot Pi Shirt as a gift for your math lover son, daughter, girl- or boyfriend, dad, mom for Pi Day or Birthday!... View on Amazon
Funny Pi Day Spiral Math Teacher Happy Pi Day Coqu T-Shirt – Funny Pi Day Spiral Math Teacher Happy Pi Day Coquette Bow View on Zazzle
I Ate Some PI Graphic Pi Day Graphic Novelty Sarcastic Funny T Shirt L Black – BE CUTE AS PI: Fits True to size, great fit and feel Celebrate Pi Day in style with a Pi Day t-shirt! Featuring clever designs with... View on Amazon
Funny Pi Day Rate Shirt Pirate Lovers Math Geek Gi – Funny Pi Day Rate Shirt Pirate Lovers Math Geek Gifts Boys View on Zazzle
Vintage Pi Day 3.14 TShirt- Funny Math Teacher Student Geek T-Shirt for Men Women Girls Kids – This Vintage Sunset retro Color Scheme Pi Day 3,14 math t-shirt makes a great gift idea for math lover, science lover, science nerds, mathematicians, geometry lover,... View on Amazon
Come To The Math Side We Have Pi - Math Geek & Nerd T-Shirt T-Shirt – Come To The Math Side We Have Pi is a funny Math nerd/geek Pi Day shirt for kids, youth, boys, girls, men, and women. math teacher... View on Amazon
Funny Promoted to Daddy Est. 2025 Gender Reveal Pi T-Shirt – Funny Promoted to Daddy Est. 2025 Gender Reveal Pink Or Blue View on Zazzle
Funny Pi Day Spiral Pi Math T-Shirt – Cool Pi Day 3,14 mathematical ratio 3,14159 greek letters irrational number geek nerd math mathematician algebra science symbol geometry pun school student apparel; THIS IS THE... View on Amazon
Funny Pi Day Rate Shirt Pirate Lovers Math Geek Gi – Funny Pi Day Rate Shirt Pirate Lovers Math Geek Gifts Boys View on Zazzle
Pi T-Shirt 3,14 Pi Number Symbol Math Science Gift T-Shirt – If you love mathematics this sarcastic funny geek 3,14 tee is the one for you! Perfect for a birthday Pi day March 14 or Christmas present... View on Amazon
Funny Promoted to Daddy Est. 2025 Gender Reveal Pi T-Shirt – Funny Promoted to Daddy Est. 2025 Gender Reveal Pink Or Blue View on Zazzle
Funny Pi Day Spiral Math Teacher Happy Pi Day Coqu Sweatshirt – Funny Pi Day Spiral Math Teacher Happy Pi Day Coquette Bow View on Zazzle
Funny Pineapple Pi Symbol Pun Math Teacher Pi Day T-Shirt – Funny Pineapple Pi Symbol Pun Math Teacher Pi Day View on Zazzle
Funny Pi Day Rate Shirt Pirate Lovers Math Geek Gi – Funny Pi Day Rate Shirt Pirate Lovers Math Geek Gifts Boys View on Zazzle
Retro Irrational But Well Rounded Pi Day Celebration Math T-Shirt – Retro Irrational But Well Rounded Pi Day Celebration Math shirt. Pi Day is March 14 (3.14). Pick up a Pi Day shirt for yourself and your... View on Amazon