Ido shares the same alphabet as English: a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z.

Vowels are pronounced much like the vowels in Spanish or Italian.

Vowels
Letter IPA Sounds Like
a [a] a in father.
e [e] e in veil.
i [i] i in marine.
o [o] o in go.
u [u] u in rule.

These vowels are not diphthongs; do not pronounce a as in take, i as in time, o like the ou in mould, or u as in mule. There are two diphthongs: au pronounced as ow in owl, and (in a few words) eu which is pronounced like the vowels e and u run together.

Consonants
Letter IPA Notes
b [b]
c [ʦ] sounds like ts in bats

except the digraph ch which sounds like church.

d [d]
f [f]
g [g] Always a hard g like 'get'. Never a soft g like 'giraffe'.

(Never pronounced [ʤ])

h [h]
j [ʒ] Never a hard j. Sounds like the s in pleasure.
k [k]
l [l]
m [m]
n [n]
p [p]
q [k] In the combination qu [kw] as in quick.
r [r] Should be a tapped r, as in

AmE water

s [s] digraph sh sounds like ship.
t [t]
v [v]
w [w]
x [ks]
y [j]
z [z]