"Russian R" redirects here. Not to be confused with the Latin letterP or the Greek letterΡ (rho).For the Russian letter Я, seeYa (Cyrillic). For the letters called "big er" and "small er" in Bulgarian, seeЪ andЬ.
The Cyrillic letter Er was derived from theGreek letter Rho (Ρ ρ). It has no connection to theLatin letter P (P p), which evolved from theGreek letter Pi (Π π), despite both having the same form.
