Abstract. We investigate the functional distribution of L-functions L(s, χ d ) with real primitive characters χ d on the region 1/2 < Re s < 1 as d varies over fundamental discriminants. Actually we establish the so-called universality theorem for L(s, χ d ) in the d-aspect. From this theorem we can, of course, deduce some results concerning the value distribution and the non-vanishing. As another corollary, it follows that for any fixed a, b with 1/2 < a < b < 1 and positive integers r , m, there exist infinitely many d such that for every r = 1, 2, · · · , r the r-th derivative L (r) (s, χ d ) has at least m zeros on the interval [a, b] in the real axis. We also study the value distribution of L(s, χ d ) for fixed s with Re s = 1 and variable d, and obtain the denseness result concerning class numbers of quadratic fields. Before stating our theorems, we recall some related results on the Riemann zetafunction ζ(s). The study of the value distribution of ζ(σ + it) for fixed σ and variable t ∈ R was initiated by H. Bohr. Bohr and Courant [BC] have shown that the set {ζ(σ + it) | t ∈ R} is dense in C for any fixed σ ∈ R with 1/2 < σ ≤ 1 (see also [Bo] where m denotes the Lebesgue measure on R.We note that this form is equivalent to that of [La, Theorem 6.5 There are other types of universality theorems, in which parameters other than t as in (1