Yes.
Don’t know what orchestra concerts you have attended, but the oboe always gives the tuning reference in an orchestra. The oboe sometimes gives two tuning “A440-445”s (or whatever). One for the winds and then one for the strings. When it is a piano concerto the tuning reference “A” is taken from the piano on stage by the oboe and then as above. Only when there is no oboe, in a chamber work for instance, does the first violin give it.