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| Greek alphabet | |
| Alpha | Beta |
| Gamma | Delta |
| Epsilon | Digamma |
| Zeta | Eta |
| Theta | Iota |
| Kappa | Lambda |
| Mu | Nu |
| Xi | Omicron |
| Pi | San |
| Qoppa | Rho |
| Sigma | Tau |
| Upsilon | Phi |
| Chi | Psi |
| Omega | Sampi |
Iota (upper case Ι, lower case ι) is the 9th letter of the Greek alphabet. In the system of Greek numerals it has a value of 10.
Iota is the smallest letter in the Greek alphabet.
The word iota is also used in English to express a very small amount, because iota is the smallest letter in the Greek alphabet.
The Iota symbol is used to sort items in the APL programming language.
Letters that arose from Iota include the Roman I.
International Occultation Timing Association
Welcome to IOTA, the International Occultation Timing Association, Inc.
IOTA was established to encourage and facilitate the observation of occultations and eclipses. It provides predictions for grazing occultations of stars by the Moon and predictions for occultations of stars by asteroids and planets, information on observing equipment and techniques, and reports to the members of observations made.
IOTA is a tax exempt organization under sections 501(c)(3)- Scientific Research and 509(a)(2)-Public Education of the Internal Revenue Code USA.